Hello @Anonymous
On the problematic client, check if any related GP has been applied
Computer Configuration \ Windows Settings \ Security Settings \ Local Policies \ Security Options
Network access: Do not allow storage of passwords and credentials for network authentication and see if it is disabled.
Alternatively, you can remove credentials authenticated on:
Control Panel \ User Accounts \ Credential Manager. Select the name and remove it.
Then add that credential back into Credential Manager.
Also check that user's rights for access.
---------
--If the reply was helpful, please don’t forget to upvote or accept as answer--