Any user on optimized Microsoft Teams is not able to receive any incoming audio during audio or video calls. Video streaming is not impacted.
Users who meet the below conditions are likely to see the issue

• are on Citrix Workspace app for Chrome OS AND
• have enabled Microsoft Teams optimization

To resolve the issue, perform the following workarounds,

Option 1:

Please reach out to Chrome <chrome@citrix.com> with Microsoft Teams logs from within your session so we can work to unblock you.

Option 2:

For Managed Users, you can choose to turn off Teams optimization on the Citrix Workspace app for Chrome OS until this issue is resolved.

In the Google admin console, if you have a pre-configured policy under the “vc_channel” key, you will need to add “CTXMTOP”:false in the same file (Don’t forget to comma separate it)
Example: New entry (CTXMTOP) to be made, highlighted below
{
                "settings": {
                                "Value": {
                                                "settings_version": "1.0",
                                                "engine_settings": {
                                                                "vc_channel": {
                                                                                "Existing_VC_Entry1":false/true,
                                                                                "Existing_VC_Entry2":false/true,
,
                                                                                "CTXMTOP": false
                                                                }
                                                }
                                }
                }
}

Example: If you don’t have an existing entry for vc_channel, then create it as shown,
{
                "settings": {
                                "Value": {
                                                "settings_version": "1.0",
                                                "engine_settings": {
                                                                "vc_channel": {
                                                                                "CTXMTOP": false
                                                                }
                                                }
                                }
                }
}

For BYOD Users

• Navigate to web.config file (only for those using on-prem StoreFront)
  • Locate the chromeAppPreferences field and set its value for CTXMTOP as false.
  • chromeAppPreferences = '{"vc_channel":{"CTXMTOP":false}}'
• Navigate to default.ica file (only for those using on-prem StoreFront)
  • Locate the chromeAppPreferences field and set its value for CTXMTOP as false.
  • chromeAppPreferences = {"vc_channel":{"CTXMTOP":false}}
• For cloud users, please reach out to Citrix team at Chrome <chrome@citrix.com> to disable the Microsoft Teams optimization.

Please note that the Audio will immediately work, however, the quality of the audio will not be good. End-users need to restart Citrix Workspace app i.e., close all windows related to it, quit the app, and then login again after admin action.

 

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Problem Cause

The root cause has been identified and the fix is currently under test. Once completely tested, it’ll be updated on the Chrome web store and the release announcement will be made.