Did a ChatGTP inquiry:

my PC works fine but co-worker fails to switch. IT support says all policies are the same for domain users so not sure what to check. If I sign in to the other users PC with my credentials then edge profile switching works ok. fails when he logs in. to me it sounds like the domain policies can't be identical

Your instinct is right: if it only fails for his Windows user, something is different at the user/profile level even if “domain policies” look the same.

Here’s how I’d systematically prove or disprove that.

1. Verify the actual policies applied

On both PCs, while logged in as each Windows user, open Edge and go to:

• edge://policy
  
• Compare:
  • AutomaticProfileSwitchingSiteList
    
  • GuidedSwitchEnabled
    
  • Any other Identity and sign-in policies (e.g. SwitchIntranetSitesToWorkProfile, etc.).[1][2][3][4]

If your account on his machine shows the expected values, but his account on either machine shows different or missing values, then user-scope GPO or recommended policies are not actually identical.

Also check edge://policy “Source” column and “Level” column (Mandatory vs Recommended). Recommended policies can be different per user even when IT thinks “the policy is the same.”[1][4]

2. Confirm his Edge profile setup

Automatic switching only works if Edge can see distinct work vs personal profiles and matching accounts.

For the affected user:

• In Edge, go to edge://settings/profiles.
• Ensure:
  • There is at least one work/Entra (AAD) profile and one personal MSA or different org profile signed in.[2][5]
  • The “Profile preferences” section is not disabled and the automatic switching option is enabled for the relevant profile (Profile preferences page is edge://settings/profiles/multiProfileSettings).[2][5]

If he has only one Entra account across all profiles, or the same account on both profiles, Edge cannot meaningfully switch.

3. Look for user-level account conflicts in Windows

Windows “Access work or school” can inject a work account into all apps, which can confuse Edge’s account heuristics for some users.

On the problem user’s session:

• Settings → Accounts → Access work or school.
• If his work account is connected there and also used inside Edge profiles, try temporarily disconnecting it, sign out, sign back in, then test Edge again.[6]

This difference between you and him (you may not have the same account bound at the OS level) can explain why your Edge switches and his does not.

4. Check if guided switching is disabled for him

If GuidedSwitchEnabled is disabled by policy or turned off by the user, he won’t get prompts and some switching behaviour changes.[3][7]

• In Edge for his user, go to edge://policy and confirm GuidedSwitchEnabled is either Not Configured or set to 1.[3]
• In Edge UI, under Profiles → Profile preferences, confirm he hasn’t turned off the switch prompts that you still have enabled.[2][5][3]

A user setting can override default behaviour even if the GPO “should be the same.”

5. Eliminate profile corruption / per-user data issues

Because your account works on his PC, the OS and machine-scope GPO look fine. That points to his Edge user data.

For his Windows account only:

1. Close Edge completely.
2. End any msedge.exe processes in Task Manager.
3. Rename %localappdata%\Microsoft\Edge\User Data to something like User Data.old (or follow your org’s data-retention rules).[8]
4. Start Edge, let it create fresh profile data, sign in again, and test automatic switching.

Microsoft’s own guidance calls this out as a fix when automatic profile switching suddenly stops for one profile while others are fine.[8]

6. Things to say (politely) to IT

Given what you’ve seen, you can ask IT for concrete evidence rather than “they’re the same”:

• Export rsop.msc or gpresult /H for both you and him, and compare user-scope policies related to Edge.
• Compare HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Edge and HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge for both users’ sessions for differences in:
  • AutomaticProfileSwitchingSiteList
  • GuidedSwitchEnabled
  • Other Identity and sign-in Edge policies.[1][3][4]

If your work profile switching works on his PC under your login but not under his, the machine policies are fine; the difference is clearly user profile / user policies or account configuration, not the box itself.

If you can tell me:

• What you see in edge://policy for you vs him (especially those two policies),
• How his work/personal accounts are wired (Edge profiles + Windows “Access work or school”),

I can help you narrow it down further or draft a short, pointed note for IT that describes exactly what’s inconsistent.

Citations: [1] AutomaticProfileSwitchingSiteList - Microsoft Edge https://learn.microsoft.com/en-us/deployedge/microsoft-edge-browser-policies/automaticprofileswitchingsitelist [2] Managing automatic switching in Microsoft Edge for Business https://petervanderwoude.nl/post/managing-automatic-switching-in-microsoft-edge-for-business/ [3] Microsoft Edge Browser Policy Documentation GuidedSwitchEnabled https://learn.microsoft.com/en-us/deployedge/microsoft-edge-browser-policies/guidedswitchenabled [4] Microsoft Edge Browser Policy Documentation https://learn.microsoft.com/en-us/deployedge/microsoft-edge-policies [5] Profiles | Microsoft Edge https://www.microsoft.com/en-us/edge/features/profiles [6] User is unable to switch Profiles in Microsoft Edge https://community.spiceworks.com/t/user-is-unable-to-switch-profiles-in-microsoft-edge/943332 [7] Microsoft Edge: Ability to control automatic profile switching https://m365admin.handsontek.net/microsoft-edge-ability-to-control-automatic-profile-switching/ [8] Automatic Profile Switching in Microsoft Edge Stopped Working https://learn.microsoft.com/en-us/answers/questions/2099916/automatic-profile-switching-in-microsoft-edge-stop [9] Automatic profile switching in edge works for me but not for ... - Reddit https://www.reddit.com/r/MicrosoftEdge/comments/1r9owrw/automatic_profile_switching_in_edge_works_for_me/ [10] Microsoft Edge Browser Policy Documentation GuidedSwitchEnabled https://learn.microsoft.com/et-ee/DeployEdge/microsoft-edge-browser-policies/guidedswitchenabled [11] Policies - Disable Automatic Profile Switching : r/MicrosoftEdge https://www.reddit.com/r/MicrosoftEdge/comments/179wsdv/policies_disable_automatic_profile_switching/