Hi Jacky Wang,
Thank you for reaching out to us on the Microsoft Q&A forum.
I understand you're experiencing an error when trying to log into Power Automate, specifically with OneDrive, which states, "Access denied" along with a Correlation Id. Here are a few steps you can take to troubleshoot this issue:
- Check Permissions: Ensure that your Microsoft Entra ID has the necessary permissions to access OneDrive. If you're unsure, please contact your IT or admin team to verify your account access.
- Clear Cache and Cookies: Sometimes, clearing your browser's cache and cookies can help resolve authentication issues.
If you are still facing any issue, please let us know in the comments and where you are encountering this error along with the screenshot for reference. We are glad to help you.
If the information is helpful, please Accept Answer and Upvote so that it would be helpful to community members.
Thank you.