The Outlook IM integration allows users to integrate the Zoom IM function into Outlook. When you integrate with Outlook, you can use IM functionalities within Outlook. This article will help you with some of the common issues from the previous releases.

This article covers:

• How to troubleshoot the Outlook IM integration for VDI
  • After uninstalling the Zoom desktop client (including the Zoom VDI Client), my Skype for Business integration stops working.
  • When I use APPV to deploy Zoom VDI client, Zoom Outlook IM integration does not work.<
  • Can I deploy two different APPV Zoom VDI clients at the same time?
  • When I use APPV to deploy Zoom VDI client, after upgrading to a new version, my Skype for Business Outlook integration stops working.
  • Use the CleanZoom.exe for recovering HKLM/HKCR/all users' HKCU registry keys
  • Use the script skb_repair.ps1 for recovering HKCU registry keys

How to troubleshoot the Outlook IM integration for VDI

After uninstalling the Zoom desktop client (including the Zoom VDI Client), my Skype for Business integration stops working.

1. This is a known issue for Zoom desktop client versions older than the 5.6.6 release and Zoom VDI Client versions older than the 5.5.8 release.
2. This problem can also be fixed if you install the latest version of the Zoom desktop client or the Zoom VDI Client.
3. If the user must use a Zoom VDI Client version older than the 5.5.8 release, then run the PowerShell script to repair.

When I use the APPV to deploy the Zoom VDI client after I upgrade to a new version, the Zoom Outlook IM integration does not work.

• If you use APPV to deploy the Zoom VDI client, ensure that you enable Allow All COM Objects to Interact with local systems. You can do so by editing your APPV package and checking this option from the Advanced tab.
  

Can I deploy two different APPV Zoom VDI clients at the same time?

• No, it will break the Outlook IM integration function. If you don’t need the Outlook integration function, please make sure you deselect the Allow All Com Objects to Interact with local systems checkbox during packaging.
  

When I use the APPV to deploy the Zoom VDI client, after upgrading to a new version, my Skype for Business Outlook integration does not work.

1. Ensure that you unpublish the older APPV package before publishing the new APPV package.
2. Check if you have a mechanism to back up and restore the HKCU registry keys. It could cause the Skype for Business Outlook IM integration function to be broken because the wrong HKCU registry keys are restored, as it points to a non-existing Zoom APPV package location.
3. If a problem happens, run the CleanZoom tool (updated November 30, 2023) on the impacted system.
   

Use the CleanZoom.exe for recovering HKLM/HKCR/all users' HKCU registry keys

• Run “CleanZoom.exe /check_skype_regkey” as an administrator to check if any registry keys need to recover. The log will be located in the folder of the CleanZoom tool.
  Note: This command will stop running your Zoom client automatically but will not uninstall your Zoom client.
• Run “CleanZoom.exe /restore_skype_regkey” as an administrator to recover registry keys to make Skype for Business work.
  Note: This command will stop running your Zoom client automatically but will not uninstall your Zoom client. 

Use the script skb_repair.ps1 for recovering HKCU registry keys

1. Download the skb_repair.ps1 file. 
2. Start PowerShell as an administrator.
3. Run “set-executionpolicy unrestricted” in PowerShell, and type "Y" to allow this setting.
4. Run "&.\skb_repair.ps1" to repair HKCU.
5. The log is in "C:\temp\skb_repair.log".