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MS Teams Desktop APP - Sorry we couldn't connect you.
We have been having this same issue with multiple users were I work. This is what correct the issue for us. Create a .reg file with this info, run Regedit as Admin and import. Perform a reboot and test.
Hope this helps!
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Cryptography]
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Cryptography\AutoEnrollment]
"AEPolicy"=dword:00008000
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Cryptography\Configuration]
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Cryptography\Configuration\SSL]
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Cryptography\Configuration\SSL\00010002]
"Functions"="TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256"
spidermn one of our users is having this issue. I have tried disabling Windows Defender firewall and that did not help. she can call form the app on a different device, from the web version of Teams, and from her cellphone.
- spidermnMay 14, 2020Copper ContributorDid you try the reg edit? It has worked in every instance where we have had the issue.