Windows app error: "an authentication error has occured"

Tim B 5 Reputation points

Hi,

I had an issue to connect from a PC to a remote desktop via the windows app. I've now completely reset this computer and reinstalled the windows app. I can log in with the work account that I have and see the virtual PC.

However, I still have the same issue and when connecting to the selected virtual PC, I get the following error:

"An authentication error has occurred (Code: 0x80080005)."

Error code: 0x0

Extended error code: 0x0

With my Mac, I can still use this virtual PC normally.

Looking forward to your help - thanks in advance :)

  1. Ednei S. Fernandes 0 Reputation points

    the same with me

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Answer recommended by moderator

HLBui 6,755 Reputation points • Independent Advisor

Hi Tim B ,

The error code 0x80080005 typically points to an authentication or credential handling issue on Windows. Since you’re able to connect successfully from your Mac, this suggests that the virtual PC itself is healthy and the problem is isolated to the Windows client environment.

Here are a few steps I recommend:

  1. Please ensure that your Windows PC is fully updated with the latest patches, especially security updates.
  2. Clear any cached credentials by opening Credential Manager and removing saved entries related to your work account.
  3. Verify that your PC’s time and date are synchronized correctly with the domain controller, as mismatched clocks can cause authentication failures.
  4. Try launching the Remote Desktop app with elevated permissions (Run as Administrator) to rule out local policy restrictions.
  5. If the issue persists, reinstalling the Remote Desktop client from the Microsoft Store rather than using the built in version may help, as the Store version receives more frequent updates.

If everything is okay, don't forget to share your experience with the issue by "Accept answer". If you need more information, feel free to leave a message. We are happy to help!

  1. Tim B 5 Reputation points

    Thanks a lot. The "run as admin" has solved the issue.
    Super helpful - thank you!!

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2 additional answers

  1. Bhavani Sankar Doddi 0 Reputation points

    Hello Tim B,

    Issue has been resolved in OOB patch

    January 17, 2026—KB5077744 (OS Builds 26200.7627 and 26100.7627) Out-of-band

    https://support.microsoft.com/en-us/topic/january-17-2026-kb5077744-os-builds-26200-7627-and-26100-7627-out-of-band-27015658-9686-4467-ab5f-d713b617e3e4**
    **👁 User's image

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  2. HLBui 6,755 Reputation points • Independent Advisor

    Hi Tim B

    What a good news. Don't forget to share your experience with "Accept the answer" . That others in community with similar issues can benefit from the guidance . Your contribution is highly appreciated. Thank you

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