Hello,
Thank you for posting in Q&A forum.
According to your error message, some users have encountered the same problem; therefore, this may be an involved bug. To resolve this issue, it is recommended that you uninstall the current application and try to install an earlier version of the Microsoft Remote Desktop app.
Here is the reference link: https://learn.microsoft.com/en-us/answers/questions/187519/fix-for-error-message-0x3000064-after-remote-deskt
I hope the information above is helpful.
Best Regards,
Yanhong Liu
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