We had a D3 customer who did a Windows update which updated the version of NTDLL.DLL (that's Windows' .dll not D3's). After that his 10.4.0.2 VME crashed five times in one day. After some investigation we determined that there was some heap corruption going on in D3 that was not detected by the earlier version of the NTDLL.DLL (10.0.20348.5020) but was detected by the updated version (10.0.20348.5139). When this heap corruption was detected, NTDLL killed the D3 VME. The customer then rolled back the NTDLL.DLL version and the VME crashes have ceased. In this particular instance, the NTDLL.DLL was updated by Windows update (Microsoft release) KB5087545 from May 12th, 2026, but that will change from update to update.
We at Rocket are looking into this, but meanwhile please be aware. We have not had this reported by anyone else other than this one customer, but that doesn't guarantee that it wouldn't happen to anyone else. We suggest that you NOT apply any Windows updates that contain the updated NTDLL.DLL until we figure out what's causing the D3 heap corruption.
