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Fix Power Automate Desktop Login Error and Access Denied
Question details
The user is unable to sign in to Power Automate Desktop due to OneDrive access-denied messages and cloud-service communication errors.
- Product
- Power Automate Desktop
- Device & OS
- not provided
- Scenario
- Attempting to log into Power Automate Desktop to manage or run automated workflows.
- Observed behavior
- The application displays OneDrive access-denied errors and fails to communicate with cloud services across multiple computers, despite the internet connection and firewall appearing to function normally.
Verify that your computer has a stable internet connection and temporarily disable any VPN or third-party security software that might be intercepting Microsoft cloud traffic.
Allow Required Cloud Endpoints and Update Application
Ensure that your network allows communication with essential Microsoft endpoints and verify you are using the correct account type.
Power Automate Desktop relies on uninterrupted communication with Microsoft 365 cloud services. Even if general internet access is working, strict corporate firewalls may block specific URLs required for OneDrive and Power Automate authentication.
Contact your IT administrator to ensure that all required Power Automate and OneDrive cloud endpoints are allowed through your network firewall and proxy servers.
Open the Microsoft Store or navigate to the official Power Automate download page to download and install the latest version of the application.
Ensure you are signing in with a valid Work or School account that has an active Microsoft 365 license with Power Automate privileges.
Escalate to Microsoft Support
If local endpoint configuration does not resolve the login error, the issue requires specialized support from the Microsoft Power Platform team.
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Frequently Asked Questions
Why does Power Automate Desktop say OneDrive access denied?
This error typically occurs when network firewalls block necessary Microsoft cloud endpoints, or when your signed-in account does not have the proper permissions or licensing to access the connected OneDrive storage.
Can I use Power Automate Desktop with a personal account?
While you can use basic features of Power Automate Desktop with a personal Microsoft account, many cloud-service integrations and enterprise-level connectors strictly require a licensed Work or School account.
How do I check if my firewall is blocking Power Automate?
You can review your firewall logs for blocked outbound traffic targeting Microsoft URLs. Your IT network administrator may need to whitelist specific IP addresses and URLs documented by Microsoft for Power Platform services.
