Windows 7 networking problem in a workgroup

[brainscan]

I have a windows 7 machine it can`t see any other computers on LAN, but it can ping them...and other computers can see and can connect to it... what could be wrong? I`m getting frustrated, yesterday was all fine...

 

[fmedicine]

Hey brainscan,

A couple of things - what OS specifically are you running on the machine? Windows 7 Professional, Home Basic/Premium, etc? I appreciate it won't be solely an OS-compatibility thing as it previously worked, but good to know for further troubleshooting steps.

Also, can you confirm the nature of the LAN. What other machines are on this network? What OS' are they running? What sort of environment is it - home, office?

What are you specifically not able to connect to - certain folders? A printer hosted on one of the other machines?

The timing sounds like there may have been a change to the config as of yesterday - most likely causes are a Windows update has caused a change to the administrative privileges on the machine, or a change in the LAN-related settings (sharing settings in particular).

 

[chev65]

I have a windows 7 machine it can`t see any other computers on LAN, but it can ping them...and other computers can see and can connect to it... what could be wrong? I`m getting frustrated, yesterday was all fine...

What could be wrong is that your anti virus software caused the problem by creating an access rule for no apparent reason.

Which third party A/V software are you using?

 

[brainscan]

I have a windows 7 machine it can`t see any other computers on LAN, but it can ping them...and other computers can see and can connect to it... what could be wrong? I`m getting frustrated, yesterday was all fine...

What could be wrong is that your anti virus software caused the problem by creating an access rule for no apparent reason.

Which third party A/V software are you using?

I`m using avast...I`ve tried to disable it for 10 minutes...no changes.

 

[brainscan]

Hey brainscan,

A couple of things - what OS specifically are you running on the machine? Windows 7 Professional, Home Basic/Premium, etc? I appreciate it won't be solely an OS-compatibility thing as it previously worked, but good to know for further troubleshooting steps.

Also, can you confirm the nature of the LAN. What other machines are on this network? What OS' are they running? What sort of environment is it - home, office?

What are you specifically not able to connect to - certain folders? A printer hosted on one of the other machines?

The timing sounds like there may have been a change to the config as of yesterday - most likely causes are a Windows update has caused a change to the administrative privileges on the machine, or a change in the LAN-related settings (sharing settings in particular).

Windows 7 profession 32 bit. It`s a LAN with workgroup about 40-50 computers mainly windows xp pro and about 10 win 7 and couple of linux with samba shares. The only problem is with this windows 7 machine..it can not connect to anything on network, but it could be accessed by other machines. No windows update were installed lately...nothing has changed.

 

[UKMedia]

Hi

Under Network and Sharing Center, what type of network do you have? (Private, Work, Public...) To use a Workgroup, you need to change the type to Work.

Regards
UKMedia

 

[fmedicine]

Windows 7 profession 32 bit. It`s a LAN with workgroup about 40-50 computers mainly windows xp pro and about 10 win 7 and couple of linux with samba shares. The only problem is with this windows 7 machine..it can not connect to anything on network, but it could be accessed by other machines. No windows update were installed lately...nothing has changed.

Humour me and check the user profiles and see whether the one having problems has changed to be a debugger user. This can happen as a result of certain Windows updates (I know you said none gave been installed, but it'll only take a second to check...) and has caused all sorts of issues in the past.

If network connectivity is confirmed, a sudden change in what you are able to do suggests a permissions change.

I would've also suggested anti-virus but it seems you ruled that out. No other security programs other than Avast?

 

[chev65]

I have a windows 7 machine it can`t see any other computers on LAN, but it can ping them...and other computers can see and can connect to it... what could be wrong? I`m getting frustrated, yesterday was all fine...

What could be wrong is that your anti virus software caused the problem by creating an access rule for no apparent reason.

Which third party A/V software are you using?

I`m using avast...I`ve tried to disable it for 10 minutes...no changes.

Have you tried using system restore to take your system back to a time before the problem occurred?

http://www.sevenforums.com/tutorials/700-system-restore.html