Hello I have always a 0xc0000005 with tcmd.exe and ntdll.dll! IIt seems it was always the case since I installed TCMD 19 on my Windows 10 Pro x64. I did not notice it immediately, because the program does not crash itself. Each time I start TCMD icon flicker for a moment and it is apparently created an error entry in the Windows protocol (see picture below). The same then also when I quit TCMD! My System: Windows 10 Pro x64, Swiss-German localization and language (de_CH) TCMD 19.10.46 x64 I made at least the following to resolve the problem without success: - Deinstall and Reinstall of TCMD - Deinstall and Reinstall of Windows (CLEAN not Upgrade) - SFC /SCANNOW (including a "DISM /Online /Cleanup-Image /RestoreHealth /source:WIM:E:\Sources\Install.wim:1 /LimitAccess" before (from Original MS Image). - Virus Scan (System is clean) - Virus Scan deactivated while installing TCMD - Tested with another user with admin rights - Tested with different compatibility configs Here a screenshot from error report: It's not a dramatically problem - because I can use TCMD - nevertheless I would like to avoid this error of course. Thanks for help in advance!