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Dear @Richardson Molly
The error message indicates that your sign-in was successful, but access to SharePoint Online was blocked by your organization's security policies (Conditional Access).
To help resolve this issue, please reach out to your IT Admin and ask them to help you check the Entra sign-in logs in the Azure portal to identify the affected Conditional Access policy. Please follow these steps to understand which Conditional Access policy is causing the issue:
- Sign in to the Azure Portal.
- Go to Microsoft Entra ID > Sign-in logs
- Find the specific sign-in event related to the issue by filtering with the correlation ID.
- Once you've located the sign-in event, select the Conditional Access tab. This will show the policy that caused the sign-in failure.
- Understand why the policy is getting failed or what is not getting satisfied from the CA policy.
- If you are not sure what is failing from CA policy, please attach a screenshot of it. So that I can provide your further details.
- You can further troubleshoot using: Troubleshooting sign-in problems with Conditional Access
Note: If you do not know who your IT admin is, please refer to How do I find my Microsoft 365 admin?
Moreover, although the issue is associated with Azure Conditional Access Policies, other factors such as corrupted cache files or an outdated Windows system could also prompt this error.
If you are using SharePoint via a web browser and encountering this error, clearing the browser’s cache could potentially resolve the problem. (Settings > Navigate to Privacy and Security on the left sidebar > Select Clear Browsing Data from the available options > Modify the Time Range from 24 Hours to All Time and press Clear Data).
I hope the information shared is helpful. If you have any questions, please feel free to reach out. I'm looking forward to your update.
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