Windows
Server stopped checking in until network offload was disabled
The machine was online but not fully reachable over the network and had stopped checking in. The fix was to change the network offload setting so Windows handled packet preparation instead of the old network driver.
Killed once by someone from XL.net, on 2026-09-21.
What you see
- The host stops checking in.
- The machine is online but not fully accessible over the network.
Why it happens
Likely An old network driver was mishandling offloaded packet preparation, which caused outgoing traffic to be damaged and dropped.
When it shows up
A Windows server is online but only partially reachable over the network, and the problem improves after changing a network offload setting.
You are in this case if:
- The machine responds inconsistently over the network.
- Peers are dropping a large share of its outbound traffic.
- The adapter is using an old driver and offload-related behavior is suspected.
1 fix below
The steps that killed it
The steps are behind a quick check
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Someone from XL.net killed this on a Windows computer on 2026-09-21. It is written up from that one repair, so it cites no outside page.