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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
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?

@adam deltinger yes this is the desktop client. Multiple people in my company using Macs are having problems. Windows client works fine.

bump

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

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.

@Takahiro Masuda 

This worked for me. Thank you

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