For those of you still fighting with Teams meeting add-in, working with msft product team, they asked to run the below and this fixed my issue. Just closing out of teams and outlook, running cmds and restarting Teams and then Outlook Teams version - 24215.1007.3082.1590

REG DELETE HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D} /f

REG DELETE HKEY_CURRENT_USER\Software\Classes\Wow6432Node\TypeLib\{C0529B10-073A-4754-9BB0-72325D80D122} /f

REG DELETE HKEY_CURRENT_USER\Software\Classes\CLSID\{19A6E644-14E6-4A60-B8D7-DD20610A871D} /f

REG DELETE HKEY_CURRENT_USER\Software\Classes\TypeLib\{C0529B10-073A-4754-9BB0-72325D80D122} /f

REG DELETE HKEY_CURRENT_USER\Software\Wow6432Node\Microsoft\office\Outlook\Addins\TeamsAddin.FastConnect /f

REG DELETE HKEY_CURRENT_USER\Software\Microsoft\office\Outlook\Addins\TeamsAddin.FastConnect /f

Did that fix the issue where outlook was pointing to the wrong location for the teams plugin as well?

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hmm not working for me. Still getting the "must be signed into teams" error. What OS are you on? I'm 2019.

2022