no access to network sharing files or folders

Question

I am using several pc in my LAN via ethernet and WLAN connection. Since a few days I can no longer access network shared files or folders. Only the ethernet connected pc is accessable. All WLAN connected PC won't allow access. No changes were made to the WLAN setup!

Answer 1

Hi MotoX80, thanks for answering.

Firstly, sorry for the screenshots in German, but you should be able to understand anyway.

I can see my shared machines:

When trying to lock-in first I get the normal lock-in mask:

When entering the Microsoft account credentials I am getting this answer:

It says that either the username or the password would be wrong.

When using the terminal I am getting another error message:

Here it says: Access denied

It does not matter if I enter the name and password of the local user or of the Microsoft account.

Strang enough I have another machine in my network wich I can access from all machines without entering any credentias. I cannot figure out where the difference between this machine and all others is.

Answer 2

Check the credential manager.

I have 2 Win11 laptops which I have added my Microsoft account to and can access shared folders. I do not get prompted for credentials.

I also have a VM named test10 that I play with. I only have a local account named admin defined on it because I periodically rebuild it. To access it I added an entry for test10\admin to the Windows credentials.

If you don't have your MS account defined to those machines, then you can add an entry for each of your pc's (using a local account).

Do you have physical access to these machines? Or RDP access? Can you logon to the desktop of these machines to verify that you have the correct password for whatever account you are trying to use?

Also check the security eventlog for logon failures.

If you don't see any events, then you may need to enable auditing.

Answer 3

Hello,    

If you were able to use Ethernet and WLAN before, you might want to check if any certificates have expired. Certificates are often used for authentication, and an expired certificate can cause connectivity issues.

Additionally, if you are using a domain, try connecting with the IP address instead. This method uses a different authentication process, which can help determine if there is an issue with Kerberos authentication.

--- 

If the Answer is helpful, please click "Accept Answer" and upvote it.