Hi @Aaron Larson ,
I understand that you have attempted some troubleshooting and from my research this is a known issue, and the Microsoft 365 team is investigating the issue by analyzing logs provided by some affected users.
Some of the scenarios that receive the error Something went wrong [1001] are related to security software causing impact on the WAM plug-in (AAD.BrokerPlugin). For more information, see: Can't sign in to Microsoft 365 desktop applications.
If this issue continues, please open a support ticket in the M365 Admin Portal.
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