This seems like when you linked the Azure DevOps organization to Microsoft Entra ID, your access was affected due to permission changes. Kindly try out the steps below to see if you can regain access:
Try accessing DevOps as a Different User
- logging in with another Microsoft account that might have access.
- If you added another owner/admin before linking to Entra ID, ask them to reassign your permissions.
Check If You Were Removed from the Organization. Since Entra ID now controls access, your user might not be recognized anymore.
- Go to the Azure DevOps Portal.
- Click on your profile picture → Switch Directory.
- See if the correct directory is selected.
- If your account is missing, an Azure AD Admin in the client’s organization may need to add you back.
Regain Access via Azure AD (Entra). If your DevOps organization is now linked to the client’s Microsoft Entra ID, ask an Admin of the client’s Entra ID to:
Go to Azure Portal → Entra ID → Users.
Check if your email is listed.
If missing, add your email manually and assign the correct role.
Last resort would be to remove the Entra ID Association:
Find Microsoft documentation to help with disconnecting Microsoft Entra: https://learn.microsoft.com/en-us/azure/devops/organizations/accounts/disconnect-organization-from-azure-ad?view=azure-devops
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Regards,
Obinna