Question Unable to connect to PC on same network, says wrong password but it is correct

[King Mustard]

I have two PCs on my network, Upstairs-PC and Downstairs-PC. Both run Windows 11.

I recently had to reinstall Windows 11 on my downstairs PC.

Since then, even though I believe I have set up sharing as normal, when I try to access \\Downstairs-PC, it tells me my credentials are incorrect.

Both computers are logged into my Microsoft account.

I have tried entering my Microsoft email address as my username, as well as Downstairs-PC and .\Downstairs-PC.

For the password, I have tried both the system password and the password to my Microsoft account. Neither are working.

I have disabled the firewall on both systems, just in case.

Any ideas?

 

[Ralston18]

Regarding "I recently had to reinstall Windows 11 on my downstairs PC."

What edition of Windows 11?

What was the reason for the reinstall?

How are you trying to access Downstairs-PC via Upstairs-PC?

If you log in as Admin on the Downstairs-PC will Downstairs-PC allow you to set up the access rights necessary for Upstairs-PC to gain access to shared drives/folders?

If not, what error message is presented?

Take a screenshot and post the screenshot here via imgur (www.imgur.com).