I recently ran into an odd problem on my home Windows 10 PC. Even though the machine is my home PC and isn't part of a domain, I started getting a Group Policy error any time I tried to use a program that requires a Microsoft account. This is the error:
"This program is blocked by group policy. For more information contact your system administrator. 0x800704ec"
This error can affect any app or program that uses your Microsoft account. This includes things like the Microsoft Store, the Xbox app, the Feeback app, and even Minecraft.
This error happens when your Microsoft account has been linked to a work or school account that does have a group policy that's preventing the app from running properly. To fix the issue, disassociate the problematic account from your home Microsoft account.
To remove the account, go to Settings > Accounts > Access Work or School. Find any reference to a work or school account associated with your account and choose disconnect. Remember, this is all assuming that you don't mind not having that account associated with your home account.