Microsoft Outlook - Error “Something Went Wrong [1001]” Signing In

Purpose

Fix error message "Something went wrong 1001".

Prerequisites

You should have Office 365 Outlook account and Microsoft Outlook installed on your PC/Mac.

Steps

Certainly! If you encounter the error message "Something went wrong [1001]" while signing in to Microsoft 365 desktop applications, there are a couple of scenarios and potential solutions:

1. Scenario 1: Security Software Impacting WAM Plug-In (AAD.BrokerPlugin):

   • This error can be caused by security software affecting the WAM plug-in (AAD.BrokerPlugin).

   • Mitigation Steps:

     • Reboot your device; this often helps.

     • Run the following commandlets in user mode PowerShell to repair WAM:

       Add-AppxPackage -Register "$env:windir\SystemApps\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\Appxmanifest.xml" -DisableDevelopmentMode -ForceApplicationShutdown
       Add-AppxPackage -Register "$env:windir\SystemApps\Microsoft.Windows.CloudExperienceHost_cw5n1h2txyewy\Appxmanifest.xml" -DisableDevelopmentMode -ForceApplicationShutdown
       
       

   • For more context, refer to the article on authentication failures in Microsoft 365 services1.

2. Scenario 2: User Profile Management Issues:

   • Sometimes the error is caused by user profile management problems.
   • Ensure that user profile data isn't being roamed (especially under %localappdata%).
   • Roaming the work account's device certificate is not supported.
   • Review the guidance in the article on device identity and desktop virtualization to address these issues1.

Remember, specific solutions may vary based on your situation. If you continue to experience issues, consider seeking professional assistance or referring to official Microsoft support resources123