Do you have problems seeing all computers on your network?
If you have Kaspersky installed or under Kaspersky Admin Kit control. It might cause by of this anti-virus software.
Open Kaspersky, under Anti-Hacker, click on Firewall then select "Settings...".
Click "Settings..." button.
Under "Zonea" tab, Check your local network IP range. Normally will be 192.168.xxx.xxx. If the Status is not "Local network", you just found the issue. Click on "Edit" button, and select "Local network".
You should see all computer in your network now, including Win XP workstations.
This also fix Microsoft Outlook requires login in after idle for a while issue.
Hope this helps somebody who tried so hard on Window 7 side but cannot fix the problem.
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