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Error code - 2:-1001

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Takahiro Masuda
Occasional Contributor
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Error code - 2:-1001
There's a more permanent way to sign in to Microsoft Teams. If you're having trouble completing the process, talk to your IT admin.
 
1. What is error code 2:-1001?
2. What is the more permanent way to sign in to Microsoft Teams? I am the IT admin.
 
5 Replies
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Don’t think I’ve ever seen this before...do you have a screenshot? Can’t you log in at all? Is it the desktop client?
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@adam deltinger yes this is the desktop client. Multiple people in my company using Macs are having problems. Windows client works fine.

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bump

Still nobody able to login using Mac OSX desktop client. Might be Modern Auth problem. Forms authentication is enabled on ADFS.

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Solution

If anybody else runs into this problem this is how I fixed it.

 

Please follow the below steps:

 

Go to Go > Go To Folder > Type in:

 

~/Library/Application Support/Microsoft

 

Try deleting the Teams folder there.  This appears to be where all the settings, cookies, caches are stored for that current user.

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@Takahiro Masuda 

This worked for me. Thank you

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