Cannot access File Server from one workstation but can from another wi

Hi everybody. I have Small Business network with one file server and 25 workstations in workgroup. Lately I've been experiencing some difficulties. Latest: one of the user cannot sign in into network share on the file server from one computer but can do it from another. I setup same profile with credentials and one is Ok but not another. All workstations have Windows 7 64 bit and our file server is Windows Server 2008 R2. I tried few things suggested on this site but it didn't work.
Thank you

All I can think of is licensing, upon a search I came across this:
operating systems - File sharing user limits - Super User

See if it is your case.

Thank you for response, but that is for sure not the case. Server 2008 R2 has 30 simultaneous users and we are not close to it. Plus it is same user all the time that is denied access from one computer but allowed from another.

You can still check and make sure according to https://technet.microsoft.com/en-us/.../ff601862.aspx

Also check the Event Viewer for any clues.
If no one can connect with this particular machine, make sure clock is in sync (same time zone etc).

If still no luck, what kind of error/warning are you getting exactly? Can you see the server in Network? Being asked the credentials? Provide as much as you can please.

Hello GokAy. I looked into event viewer and indeed it didn't go through due to authentication issue. I tried 3 different workstations with same result (each one had same account setup on it), but fourth one still connects. I triple checked user name and passwords - the are identical. in the viewer eventId is 4625
Satus 0X000006d
Failure Reason %%2313
Substatus 0X0000064
I could provide more info if needed.
Also, I could connect from any account I setup on this computer except this one. Clock is synced, I could see server in Network. It is does not except credentials.

See https://www.ultimatewindowssecurity....x?eventID=4625 for detailed info.

https://www.ultimatewindowssecurity....x?eventID=4625 - can you check the event log again for detailed info, can you see which service/account is failing?