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I have two Windows 7 PCs, no domain, same workgroup.
PC A used to be able to connect to PC B's network shares. Now it can't. Winf firewall on PC B is off for troubleshooting.
From PC A, double-clicking on PC B name in Explorer's network view prompts a login dialog box.
Login uses PC B\username
on PC B, with correct password.
Error message is:
PC B is not accessible. handle is invalid.
Event viewer on PC B eventvwr winlogs\security
shows the event ids:
4672 special logon
and immediately after it
4634 logoff logon type 3 (network)
So it appears PC A is using a valid user account and password to login to PC B, the login is accepted, but then the login is immediately logged off.
Using elevated cmd prompt on PC A, net view \\PC B
returns
System Error 5 has occurred. Access is denied
The only thing I can think of that may have triggered this is that PC A was renamed using "Computer Properties" and restarted. The access problem began after this procedure.
Any tips on how to further troubleshoot this issue?
Two recent Windows Updates (KB 4480970 and KB 4480960) broke the ability for administrators to access SMB2 shares on several OS versions, including Windows 7. Did you recently install those updates on either A or B? Is the user in question an administrator? – Doug Deden – 2019-01-21T17:04:52.447
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I've heard an update is causing WIN7 to stop seeing SMB Shares. Please check if any update have been recently installed (manually or though automatic update) in the time this issue start to occur. This
– Manuel Florian – 2019-01-21T17:06:12.123KB4480970
in particular is known for this. More info here.thanks for the links, i will investigate the proposed solution at https://www.bleepingcomputer.com/news/microsoft/microsoft-releases-kb4487345-update-to-fix-windows-7-share-issues/
– Steve Wasiura – 2019-01-21T19:26:23.657