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I have reduced setup to just 2 computers connected via switch with fixed IP addresses.

PC-A is able to connect to or ping PC-B

PC-B is not able to connect to or ping PC-A

Windows firewall is disabled on both PCs.

How do I find out what program is blocking incoming connections to PC-A? Because there is no HW that will block connections, there must be some software blocking that, but I have no clue how to find it.

Thanks

kurin
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  • I'd try enabling Windows firewall and setting a rule to allow ICMP. I've seen where Windows Firewall still blocks traffic even though it is disabled. – Nixphoe Oct 13 '15 at 13:52

2 Answers2

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Are these clean Windows install, or are they company image? Other common software that blocks traffic include AV, HIP etc. Disable them - or go into safe mode and try, then re-enable one by one to find the culprit.

strongline
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  1. Check your network typ in the network settings.

    Choose Start→Control Panel and, under the Network and Internet heading, click the View Network Status and Tasks link. This should not be set to Public Network. Create a Home Network on both PCs.

  2. Check any third party security software like antivirus with and additional firewall that could block incoming connections.

  3. Check Network discoverability

http://windows.microsoft.com/en-US/windows/enable-disable-network-discovery#1TC=windows-7

Community
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bobbywebz
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