Known issue network buffers?

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Is there a known issue with the leak of network buffers in Lansweeper? The Lansweeper server has the problem after about 14 days that no TCP connections, no matter which program, are possible. For example, putty say "Network Error: no buffer space available". After restarting the Lanserver service, connections are possible again. The version of Lansweeper is 6.0.130.40

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Charles.X wrote:
Personally, I've not seen any reports of issues related to network buffers.
I recommend taking a look at this discussion: https://serverfault.com/questions/131935/network-error-no-buffer-space-available
It might be someone else holding your network buffers without releasing them.

Yes, but if i restart the Lansweeper Service network buffers are available again. Does anyone know a tool, that display the network buffer usage on any running process? I not found a perfmon counter