Troubleshooting Your CTI Adapter
This page covers solutions to frequently asked questions regarding adapters built with the CTI Toolkit and the "demo adapter" simulator that Salesforce.com offers to simulate that functionality.
Frequently Asked Questions On Extending The CTI Toolkit
Is there a way I could make it pop a Visualforce page instead of an object page?
As of CTI Toolkit 2.0, there is a simple configuration option at Setup | Customize | Call Centers | Softphone Layouts that allows customers to configure whether and under what circumstances to pop Visualforce pages. Adapters built with toolkits prior to 2.0 will not be able to use this functionality.
Yes, it's described in the Developer's Guide. Here's an example.
Can I add fields to the call log area, or remove fields from that area?
Outside the Service Cloud Console, no. The call log that is shown below the CTI softphone is fixed and cannot be modified.
In the Service Cloud Console, the call log function is handled by the Interaction Log. The Interaction Log can be customized by the customer at Setup | Create | Interaction Log Layouts. So if a requirement is to have custom fields in the call log area, we recommend using the Service Cloud Console.
Can I remove the whole call log area?
Outside the Service Cloud Console you can customize the adapter code to do that by simply setting the bCallLog variable to false when calling OnCallRinging and OnCallDialing.
In the Service Cloud Console that function is performed by the Interaction Log.
Can I turn on wrap-up mode, aka "after-call work," for my agents to set call dispositions?
Yes -- wrap-up mode in the CTI Toolkit corresponds to the AGENTSTATE_WRAPUP agent state. Note that in the demo adapter, there is a menu option you can select to turn on wrap-up mode. This menu option can be seen by right-clicking the Salesforce.com phone icon in the system tray.
Is there a wrap-up timer, or can I add one?
There is not currently a wrap-up timer, and you can't add one because wrap-up mode is basically an extended version of the call log interface, and as mentioned a couple of questions up, the call log is not presently modifiable.
No, that button cannot presently be hidden.
When transferring or conferencing a call, is it possible to transfer the call log and do a pop on the transferee's or conferencee's screen as well?
In the CTI Toolkit, when a call is transferred, the toolkit attempts to attach the contents of the call log to the call. Let's say User 1 has saved a Case, thereby attaching it to his call log, prior to initiating a transfer to User 2. When User 1 initiates the transfer, the CTI Toolkit will try to attach the ID of that case to the call. When User 2 receives the call, he'll get that attached data, and his softphone will pop on that data rather than that of the original call. His call log will also be default-populated with the information that was in User 1's call log.
This is all dependent on the fact that whoever wrote the adapter actually implemented the attached data facility.
Also, it is important to note that as with much of the functionality in the CTI Toolkit, this capability is dependent on the adapter developer calling the base class method when he overrides any functions of CCTIUserInterface. An example is given on this board post.
Do adapters written with the CTI Toolkit work with Professional Edition licenses? Are there any limitations with it?
Adapters that receive an AppExchange security review approval will work with PE licenses. When a vendor achieves AppExchange security review approval, that vendor is granted a Client ID; when their adapter is recompiled with that Client ID, it will work on Professional Edition just as it does on higher editions, with no limitations on its functionality.
Do adapters written with the CTI Toolkit work with Force.com licenses? Are there any limitations with it?
Yes, they work with Force.com licenses just as they do with Salesforce.com CRM licenses. There are no particular limitations that apply (except, of course, that the CTI adapter cannot pop any of the objects that Force.com license users can't see, like Lead).
Can you use a single adapter across multiple Salesforce.com instances (or "orgs")?
A single adapter can be used across as many orgs as you want as long as the user is not logged into two or more orgs simultaneously. Simultaneous logins are not supported.
Can you use a single adapter across multiple browser types (IE and Firefox)?
A single adapter can be used across as many browsers as you want as long as the user is not logged into two or more browser types simultaneously. This means that the user cannot be logged into salesforce.com on Internet Explorer and Firefox at the same time. Simultaneous logins are not supported.
Are there any best practices when upgrading the adapter to the latest version ?
The best practices for an upgrade depend on whether the update to the toolkit is a minor release or a major release.
For an upgrade based on a minor release, say from 2.01 to 2.02, agents need usually just update to the latest partner adapter. No update to the call center definition is needed. The adapter will be compatible with the call center definition as long as the toolkit that the adapter was built on is from the same major release as the call center definition.
For an upgrade based on a major release, say from 2.02 to 3.0, the following encapsulates best practices for an upgrade -
- Create a new 3.0 call center definition. Leave the existing 2.0 call center definition as is
- This maintains a 2.0 call center definition fall back in case there are unanticipated issues with the 3.0 upgrade and the customer needs to downgrade
- To downgrade
- Uninstall the 3.0 adapter
- Reinstall the 2.0 adapter
- Set the users call center to the 2.0 call center. This is done by setting the “Call Center” field on the user’s “Personal Information” page to the 2.0 call center definition. This can be done by the admin or individually by the users themselves
- Pilot a subset of users with the new 3.0 call center definition
- Set the users's call center to the 3.0 call center. Instructions on how to set a user's call center are mentioned in the previous bullet
- These users must have their desktops adapters upgraded 3.0. The remaining users will still be running 2.0
- This also ensures that the upgrade risk is mitigated since only the pilot users are using it
- With the success of the pilot, transition the remaining users by updating their call center to the 3.0 call center as and when their desktop adapters are upgraded
- Let admins know that the following error means that the agent’s adapter version is incompatible with the call center definition
- “The CTI stylesheet 2.0 you are using is incompatible with call center 3.0.”
- “The CTI stylesheet 3.0 you are using is incompatible with call center 2.0.”
- There is a separate XSLT stylsheet for each major CTI version. The error message above means that the style sheet for this version does not match the call center definition
In trying to build my adapter I'm getting an error saying error LNK2005: "class _variant_t vtMissing" (?vtMissing@@3V_variant_t@@A) already defined in comsuppwd.lib(comutil.obj). How do I fix that?
In your Visual Studio project settings, turn on "Treat wchar_t as a built in type," and then Rebuild All. That will fix it.
Will CTI work in a remote desktop environment?
Only versions 3.x and under. CTI-4.0 does not work in Remote Desktop or Citrix Environments. Also, there are restrictions to the configurations in which CTI will work. CTI requires a desktop to be rendered. Therefore it cannot work in a pure terminal services or Citrix environment where there is no desktop. The reason for this is that shDocVw, the library used to interact with Internet explorer, requires a desktop. There are Citrix environments where the desktop is rendered. CTI does work in these.
A good way to test if CTI will work in your IT setup is to test with the demo adapter. If the demo adapter functions correctly, you can be assured that any partner's adapter will function as well.
CTI-4.0 will not work in certain terminal services, remote desktop or Citrix environments where ports are shared. This is because the CTI-4.0 adapter listens on a port, and another adapter instance cannot listen on the same port. .Net based "port sharing" (http://msdn.microsoft.com/en-us/library/ms734772.aspx) is an option to overcome this issue. However, it has not been tested with the CTI-4.0 adapter.
How can I screen pop directly to a salesforce object without doing a search (SOQL vs SOSL query)
This can be done by using query based screen pop instead of search based.
For example, in the DemoAdapter, there is a “Call from IVR” option where we query based on the case number instead of searching for the phone number.
For querying, modifying the mapAttachedData allows you to specify the name value pairs of the fields you want to query on. In the code below, we screen pops based on the ANI for all cases that are in “New” status.
PARAM_MAP mapAttachedData; mapAttachedData[sKey]=sValue; mapAttachedData[L"Case.Contact.Phone"]=L"(415) 555-1212"; mapAttachedData[L"Case.Status"]=L"New"; std::wstring sCallObjectId = m_pUI->CreateCallObjectId(); int nLine = m_pUI->OnCallRinging(sCallObjectId,CALLTYPE_INBOUND,true,true,mapInfoFields,mapAttachedData);
The code above was used in the DemoAdapter.
Troubleshooting Adapters Built With The CTI Toolkit
- Did you check Setup-> Personal Setup->Call Center Settings->My Softphone Settings and ensure that it's set to Always open the record automatically?
- Do you have it set to auto-answer (aka "ziptone")? If so, you are presumably sending an OnCallRinging or else you wouldn't ever get the search results, but you have to let it linger for about a second in the ringing state so that it has time to pop. Basically it only pops while it's in a ringing state, so if you move it to established too quickly then you'll beat it to the punch. Most adapter writers build in about a second-long delay to allow it to pop before calling OnCallEstablished (sometimes you should put your delay in on OnCallEstablished override if you're in an environment that's always going to be auto-answer). Note that this should no longer be the case if you're using CTI Toolkit 2.0 -- we improved support for auto-answer in that release.
I clicked-to-dial on a Case (or other object), but the Case (or other object) I clicked didn't show up or get associated in the log. Why not?
The object is missing from your outbound softphone layout.
Go to Setup->Customize->Call Centers->Softphone Layouts. In the picklist at the top choose Outbound. Add Case (or whatever object it is you're dialing from) to the list of available objects. You'll have to log out of Salesforce.com and log back in again for that change to take effect.
One of my customers is getting an error saying "API is not enabled for this Organization or Partner."
If this customer has Professional Edition, see the next question.
If this customer has Enterprise Edition or higher, have them have a look at the Profile associated with their User record. In that Profile you'll find a field called "API Enabled." If that checkbox is turned off, then CTI won't work.
My adapter doesn't seem to be working in Professional Edition. What's the deal?
To make your adapter work in PE, you need to pass AppExchange security review. When that is complete you'll be granted a special Client ID. Once you have been granted a Client ID, specify it with CCTIUserInterface::SetClientId in the first line of your Initialize method, before calling the base class Initialize method. This will allow it to function in Professional Edition.
In the Developer's Guide it references the CTIComboBox object, but when I add it, nothing happens.
Unfortunately, although the backend code is there (which is why it's in the docs) the user interface of CTIComboBox was never implemented, so it is non-functional as of this writing.
I'm using Visual Studio 2005, not 2008. Will the CTI Toolkit still work for me?
Yes, it will compile fine, but you'll have to create your own VS project files for it. Note that as of 1.50 the CTI Toolkit is no longer supported in VS 2003 and prior.
My CTI login credentials seem to be saving themselves for admins but not for standard users. How do I fix this?
This is a known issue with the CustomSetup table we save those settings to, and there's not an easy fix for it, or else we would have done it already. Login credentials are only saved for those users with the "Customize Application" profile permission. We plan to move the credentials into the Windows Registry instead under HKEY_CURRENT_USER, but we will not do so until a later release of the CTI Toolkit. You can implement it sooner if you want, it is quite simple.
To do this, you can provide an overrided version of CCTIAppExchange -- just make a subclass of it and override CCTIUserInterface::GetAppExchange() to return your subclass instead of the base class. In your subclass, override SaveUserParams and LoadUserParamsFromCustomSetup to save them to and load them from the Windows registry instead. That will fix the problem.
My adapter is not working on Firefox 3.6.
Firefox 3.6 was not yet available at the time CTI Toolkit 1.54 was released. The CTI Toolkit 2.0 supports Firefox 3.5 and 3.6. To attain FF 3.6 support, upgrade to CTI Toolkit 2.0.
I'm getting a big red error message saying "The requested lookup key was not found in any activation context."
If the CTI adapter is emitting strange errors like "The requested lookup key was not found in any activation context," one potential source of this issue is a proxy configured with WPAD (otherwise known as an autoproxy). WPAD is not presently supported by the CTI Toolkit due to lack of support for WPAD in its underlying library. The workaround for this is to turn off WPAD and configure the proxy manually on the machine.
Another source of "The requested lookup key was not found in any activation context" is a corrupted install of Internet Explorer, usually due to an upgrade from IE6 to IE7 or 8. If this occurs one possible solution is to retry the install of the new version.
My CTI adapter is giving weird internet errors trying to connect.
Cryptic errors like "Unknown Exception in SyncRun::Api Request," can be generated if:
- There's a firewall on the machine blocking the CTI adapter from running
- There's security software like Cisco Security Agent or Verdasys that is preventing the adapter from contacting the network
My CTI adapter works just fine in a regular IE process, but I have a browser embedded in another application and the CTI adapter doesn't work there. What's the deal?
When you create an application with an embedded browser, you must choose to expose that embedded browser if you want external programs like CTI to be able to find it. To expose the embedded browser, you must turn on the RegisterAsBrowser setting on it. If you do not have the source code for the application embedding the browser then the company that produces the app must make this modification for you. There is no other way to make the embedded browser discoverable to the CTI adapter (or any other program for that matter).
When editing a record on screen while also logging the call the system "locks" the record and results in error message: "The record you were editing was modified by <current user> during your edit session."
The problem that is presented by some CTI adapters is that they create a closed task after a call has been ended but at the same time that a user is editing the parent record in the UI. In essence, the system sees the user touching the System Modstamp twice at the same time, which is not possible, and then erroneously displays the Last Modified By user as a colliding user. This same explanation applies to collision errors encountered when closed tasks or events are synced from Outlook/Lotus Notes while a user is editing the parent records in the UI.
[Note that this only applies to the following objects: Lead, Account, Contact, Opportunity, Campaign, and Contract. To extend this workaround to custom objects, the customer has to update the Apex trigger themselves]"
You can download the Apex as an Appexchange package here.
How do I get the new section "CTI 2.0 or Higher Settings" in Softphone Layout?
The “2.0 or Higher” settings appear in the softphone Layout when there is at least one Call Center in your org whose version is 2.0 or higher.
Provided you have an adapter built with the CTI Toolkit 2.0 adapter, you'll need to go to Setup | Customize | Call Center | Call Centers and import the XML setup file included with that adapter; then create a new Call Center Definition. If you are upgrading from an older version of an adapter, import the XML that came with the new 2.0+ adapter and set it up accordingly, and then remove the users from the old call center and add them to the new one. Then these settings will appear in the softphone layout.
Troubleshooting The Demo Adapter
I downloaded and installed what I thought was the Demo Adapter but all I got was a bunch of code.
You may have installed the CTI Toolkit instead, which is intended for people who are building their own adapters. Instead, install the Demo Adapter from the link here.
In addition to installing the Demo Adapter, it is also necessary to make some minor configurations to your Salesforce.com org to make it work. Make sure you have set up Salesforce.com properly by adding the call center definition file and has added himself to the call center. Here's a handy tip sheet on setting it up.
The Demo Adapter will only work in IE6+ or Firefox 3.5+ with the necessary add-on Salesforce.com CTI 3.0 add on. It will NOT appear in Chrome.
I installed the Demo Adapter and it seems to be working but it never gets any search results for calls.
Are you using Professional Edition? The Demo Adapter only works on Enterprise Edition and up. Vendors' adapters can work in Professional Edition though -- this simulator just doesn't.
I just installed Connect for Outlook and now my Demo Adapter is hosed.
This was fixed way back in version 1.13 of the Demo Adapter. Install the latest Demo Adapter and you'll be good to go.
I'm getting a big red error message saying "Unable To Start The Office Toolkit."
This error means that the Office Toolkit DLL, SF_MSApi4.dll, has not been installed or properly registered. Search "Unable To Start The Office Toolkit." in Salesforce.com Help & Training for troubleshooting steps.
I'm getting a big red error message saying "Unable to start the Softphone XML subsystem."
This error means that the XML subsystem, MSXML6, has not been installed or properly registered. Search "Unable to start the Softphone XML subsystem." in Salesforce.com Help & Training for troubleshooting steps.
I'm getting a big red error message saying "An adapter for your Call Center was not found or could not be started."
This error means that the adapter DLL has not been installed or properly registered. Search "An adapter for your Call Center was not found or could not be started." in Salesforce.com Help & Training for troubleshooting steps.
What are the circumstances under which a screen pop will not occur?
- Screen pops do not occur when an agent is in “Edit” mode. This to prevent an agent from losing his/her edit work because of the page navigate. Edit mode is either when an agent is editing
- an entity inline via the entity detail page
- an entity via the entity edit page
An exception to this is when using CTI in the Service Cloud Console. We always screen pop within the console context, since none of the agents work is lost by the pop.
- Screen pops occur only when the incoming call is the only active line. This means that
- Screen pops occur on the first incoming call
- If there is a second incoming call, there is no screen pop
- If the first call is released, and the second call is still active, then we screen pop for the second call. This is because now the second call is the only active call on the line.
- There is no screen pop for outbound calls
Why is the Demo Adapter not working in Windows 7 with IE? It works with Firefox?
Chances are you are using 32 bit IE on Windows 7. CTI works with 64 bit IE only. To use 64 bit IE -
- Bring up the start menu
- In the search box, type Internet Explorer
- Select Internet Explorer 64 bit
CTI is supported in the following browsers
- For Windows XP, Internet Explorer 7.0 or later; Firefox 3.5 or later (Safari is not supported)
- For Windows 7, 64–bit Internet Explorer 8; Firefox 3.5 or later (Safari is not supported)
What is CTI-4.0?
Computer-Telephony Integration (CTI) 4.0: Multiple Browser Support Available in: Professional, Enterprise, Unlimited, and Developer Editions Salesforce CRM Call Center seamlessly integrates Salesforce with third-party computer-telephony systems. With Winter '12, developers and partners can use a new CTI Developer's Toolkit to build CTI adapters that work across multiple browsers, such as Internet Explorer, Firefox, Safari, and Chrome—without any browser plug-ins and with smaller adapters that reduce complexity.
- Salesforce code, which used to be contained in the adapter, has moved to the browser. The adapter has been simplified into a single executable file which partners and developers are still responsible for building.
- CTI 4.0 uses standard Web technologies, which allow for secure hypertext transfer protocol (HTTPS) for your call center. Previous versions of CTI are secure but use Windows® technologies. To provide added security for a call center built with version 4.0 of the CTI Toolkit, see Enabling HTTPS in a Call Center on page 43.
- Partners and developers must specify a new Adapter URL field from which the adapter can listen for CTI messages. This field consists of a URL and port.
- Call center users can only use a SoftPhone in the Service Cloud console if they're using a CTI adapter built with version 3.0 or 4.0 of the CTI Toolkit. A SoftPhone is a customizable call-control tool.
- The minimum system requirements for adapters built with CTI version 4.0 are:
- Internet Explorer 8; Firefox 3.5; Safari 4; Chrome 10.0 or higher
- Windows XP (with Microsoft .NET framework)
- Make sure that support agents' adapters aren't blocked by a firewall.
- If you're required to encrypt CTI messages using HTTPS, you can add a security certificate to support agents' desktops.
- Communicate to support agents that they can click a new Reconnect CTI Adapter button on the SoftPhone if their adapters disconnect from the CTI system.
- Although developers and partners with Professional, Enterprise, Unlimited, and Developer Editions can build CTI adapters with version 4.0 of the CTI Toolkit, we recommend they purchase the Service Cloud so that they can use and test CTI adapters with the Service Cloud console.
- If you're using a CTI adapter built with version 4.0 of the CTI Toolkit, you'll be automatically logged out of the SoftPhone after 8 hours if you have one browser tab open and go to an external Web page, or to a Salesforce page without a sidebar (such as a dashboard). Automatic-logout times can vary because they're based on how your administrator has configured your SoftPhone. To stay logged in, make sure you have at least one browser tab open to a Salesforce page with a sidebar, such as Home or Cases. Automatic logout doesn't occur in the Service Cloud console.
Do I need to use HTTPS with CTI-4.0?
This question must be answered by your company's internal IT policy. CTI-4.0 communicates over HTTP with the CTI adapter. However, all communication is restricted to messages originating from the "localhost" domain. This means that only requests originating from the users computer, or "local" requests, will be acknowledged and processed. All other requests will be ignored. This includes requests from within the company network (intranet) or beyond the company network firewall (internet). In this way, the information passed between the browser and the adapter is secured.
In certain cases there may be a need to secure CTI communication via HTTPS. The CTI-4.0 Toolkit does respect HTTPS. For this, the customer must generate a security certificate for the localhost domain and bind it to the SalesforceCTI listener. This is sufficient for Internet Explorer. For Firefox and Chrome, the certificate might need to be imported into the browser's certificate store.
It is the recommendation of salesforce.com that the CTI adapter be HTTPS enabled.
I receive a "Do you want to view only the webpage content that was delivered securely" Security Warning in Internet Explorer when I use CTI-4.0 ?
This warning is a "Mixed Content Warning". It indicates that you are accessing salesforce.com over HTTPS, but communicating with the CTI adapter over HTTP. To resolve this issue, please see the preceding question on "Do I need HTTPS with the CTI Adapter".
The warning can also be disabled using the following steps -
- Go to Tools -> Internet Options -> Security -> Local Intranet
- Click "Custom Level"
- Select "Enable" for "Display mixed content"
- Click "OK"
- Click "OK"
It is the recommendation of salesforce.com that the CTI adapter be HTTPS enabled.
Which browser should I use with CTI-4.0 ?
CTI-4.0 is compatible with most modern (HTML5 enabled) browsers. There are 2 requirements for a browser to support CTI-4.0 -
- Browser must support cross domain messaging (Post Message)
- Browser must support Local Storage
The following list of browsers are supported by salesforce.com for CTI-4.0:
- IE8 +
- Firefox 3.5 +
- Chrome 10 +
While we do support IE8, and Firefox 3.5 performance is significantly improved in browsers like
- Firefox 5 and 6
- Chrome 13
It is recommended that CTI-4.0 be used with browsers in the above list.
Can I run the Softphone in different browsers at the same time (IE + FF + Chrome)?
No. At the moment, the softphone can only be run in one browser at one time. This means that the softphone cannot be run with Firefox Chrome or IE at the same time. Agents must log into the softphone with one browser only.
This is because each browser experience with salesforce represents one user session. Logging into the softphone in both IE and Chrome represents 2 user sessions. Currently the CTI adapter can only support 1 user session at a time. The behavior of the softphone in this scenario is not defined.
I'm getting a big red error message saying "500 stream:1: XML file has no top-element. All well-formed XML files have a single top-level element."
A possible cause of this is that the XML subsystem, MSXML6, has not been installed or properly registered. Search "Unable to start the Softphone XML subsystem." in Salesforce.com Help & Training for troubleshooting steps.
I'm having trouble getting HTTPS to work with CTI-4.0. Help!
This is definitely a challenge, and salesforce.com continues to evaluate ways to help partners resolve this.
The root cause of the problem is that the 4.0 adapter is running a port listener on localhost. This listener passes all the messages between the adapter and softphone in the browser. This works fine as long as all the communication is in http.
Unfortunately when it comes to HTTPS, things get a little tricky. HTTPS needs a certificate to encrypt and decrypt communication, and that certificate is issued to each domain. However, the domain here is localhost. There's no way for salesforce.com to issue a certificate for localhost out of the box. That would not be technically feasible (since there's not way for salesforce.com or any other certification authority to verify all communication over localhost).
This means that the certificate must be generated during deployment. What some partners have done is to create a batch script, which installes a pre-created cert on each machine that CTI-4.0 is deployed to.This might be a route to consider.
There are 2 useful resources for this. You've seen the note on httpcfg in the dev guide. Have a look at this link. It contains the basic steps that would be in the batch script.
I am using CTI-4.03. I see a new pop-up window for Firefox and Chrome, but not Internet Explorer? What's going on?
With CTI-4.03, a new pop-up window was introduced for the Firefox and Chrome browsers. This pop-up window is responsible for maintaining a connection between the CTI adapter and the browser. Don't close it!
Internet Explorer doesn't need the pop-up. The adapter communicates with IE using COM, a Windows technology that allows the adapter to speak directly to IE. Not seeing the pop-up in this case is expected behavior.
I am using CTI-4.03, but don't see a popup for Firefox or Chrome. I know it's supposed to be there...
Most likely you have you Pop Up Blocker turned on. Disable it for salesforce.com. To do this -
- Login into salesforce.com
- You will see the following warning
- Select "Options"
- Select "Allow pop-ups for..."
- Shut down your browser and restart
The next time you log into salesforce.com, you will see the pop-up.
Best Practices for shutting down the adapter
When exiting salesforce.com, it is always good practice to exit the CTI adapter as well. To do this -
- Click the "Logout" link in salesforce.com
- If you are using Firefox or Chrome, wait a few moments for the pop-up to close. This is not needed for Internet Explorer
- Right click on the CTI Adapter icon in the System Tray
- Click Exit
It's also good to exit the adapter when you leave for the day. The adapter uses a regular network connection to communicate with the browser for the most part. A network disconnect might lead to an inconsistent state that would be a surprise the next morning.
CTI 4.03 stopped working for me in Firefox 23! What happened?
With version 23, Firefox introduced a mixed mode content security warning similar to IE. You can find more here. This prevents CTI adapters communicating with the browser on http from functioning.
Note, CTI adapters communicating with the browser on https do not experience this.
To resolve the issue, simply allow mixed content for salesforce.com. This can be done with the following steps -
- Click on the shield icon next to the browser url showing salesforce.com
- In the dialogue box that says "Firefox has blocked content that isn't secure.", choose the "Disable protection on this page" option from the drop down menu
- Refresh the page
Alternatively you can also disable the feature entirely via the following steps -
- type about:config
- type: security.mixed_content.block_active_content in the filter bar
- set the setting to false