Windows 10: Username or Password incorrect when connecting to network computer

I have 2 computers, C1 and C2, (both running Win10Pro - 1903) and 2 users, U1 and U2.

U1 is the main administrator on C1 and C2 with the same login credentials on both computers.

U2 is an added administrator on C1 and C2 with the same credentials on both computers.

U2 can see and access shared folders from C1 to C2 and from C2 to C1

U1 can see C2 from C1 and see C1 from C2 , but can't login from either direction. I get a username or password incorrect error.


I have researched everything:

My network and sharing settings are correct


I set the services below as suggested in other threads:

Function Discovery Provider Host: Automatic (Delayed Start) and Running

Function Discovery Resource Publication: Automatic (Delayed Start) and Running

for both the above under the 'Recovery Tab' in case of failure set to 'restart service'.

SSDP Discovery: Manual and Running

UPnP Device Host: Manual and Running


I made sure the Credential Manager for C1 and C2 had the correct username and password.


I am at a loss

:)

 

Incorrect Password With Networked Computers

At work we have a PC that hosts all of the files everyone uses in the office. It used to have XP on it, as most of the PCs in the office do, but I put Windows 7 on it this time. Now I'm having a slight issue where everytime the XP computers log on, the first time they try and access the network drive they all get a window that says "Connect to \\Server\Data Files", then the actual message says "Incorrect password or unknown username for: \\Server\Data Files.

There is a place to type a username, which has NX02\Server at the moment, and if I type the correct password, it works and they can connect until they restart again. NX02 is the PC I'm on trying to connect to the Server.

I have a Windows 7 PC in the office I use and it doesn't have this problem. How can I resolve this? My coworkers think it's annoying.

 

Username or Password incorrect when connecting to network computers

I have a problem in connecting the network computers.

It keep saying Username or Password incorrect when connecting to network computers whenever i use the correct username and password.

I don't have issue in other OS.

 

Incorrect Password With Networked Computers

Ive had the same issues. I think it has to do with the way Windows 7 handles the workgroup.