Computer randomly stops responding to incoming connections

I have a W11 laptop with file sharing, RDP (incoming), and VNC (incoming) enabled. Power management is disabled so the computer does not sleep. The computer randomly stops responding to incoming local connections, including file sharing, ping, RDP, and VNC.

When this happens, outbound connections work fine. It can happen while the computer is in use--it can access network resources and the Internet with no issues. A reboot always fixes the issue and file sharing, ping, RDP, VNC, etc. all start to work. After some random period, they stop working again. The computer is not switching to the public profile when it fails. It stays on private when it rejects the connections. Even more strange, sometimes incoming connections will start working on its own even without a reboot.

WIndows and drivers are up to date. There is no IP conflict.

Does anyone have an idea what might be going on and what is the resolve?

Thanks!

Something weird like this will have to be process of elimination. I would suggest you start with these steps which are not specific to your issue but are general steps when one has a network related issue..

1. Make sure you have no corrupt system files that is causing this problem. Open a command prompt as administrator and type sfc /scannow
Pay attention to the scan results to see if SFC found anything it could not repair. If it found corruption it could not fix followup with this command (note the spaces)
dism /online /cleanup-image /restorehealth
Restart computer

(Note-you can follow up with another sfc /scannow command to make sure that dism repaired the files)

2. Powercycle your router. Restart laptop.

3. Run network troubleshooter. Settings>System>troubleshoot>other troubleshooters>Network & Internet>-RUN

4. . Reset network adapters Reset Network Adapters in Windows 11 Tutorial

5. Attached is @FreeBooter .bat file which resets network components. RIGHT click on the .bat file and select run as administrator.

6. Repair Install Windows 11 Repair Install Windows 11 with an In-place Upgrade Tutorial

There could also be something flakey in your wireless adapter. The only way to eliminate it as being as issue is to test using ethernet (if laptop has it which is doubtful) or a $10 external wireless adapter.
Hope one of these suggestions help.

glasskuter said:

Something weird like this will have to be process of elimination.

Click to expand...

Thanks for your reply and ideas. I was hoping that the symptoms I described is a known issue. I will poke around and see what comes up.

It's 99% just connection issue.
As suggested, reboot both PC and router. Same for the remote device connected to your PC.

badrobot said:

It's 99% just connection issue.
As suggested, reboot both PC and router.

Click to expand...

The problem is resolved every time I reboot the PC, then the problem occurs again after a random period of time (usually within 12-24 hours). I'm trying to figure out why it stops working after a period of time--that is the only clue I have.

I will reboot the router just in case, but it's an enterprise firewall (Sonicwall) that has been rock solid and I have no RDP or other connection issues with any of the other computers on the network, so I'm fairly certain that the issue is with the specific PC.