I understood that my OS might not work @all.
Will set up a second PC with Win10 Home Sp1 next weekend to be sure it is not a operator error.
Still I gathered some more information that might help, sorry for the first noobish post.
Game is in C:\Mud3
I changed folder rights to full access for all local accounts and still tryed as admin as well.
Drives are in Raid1, C as Volume, D as Raid.
SFC did not find any Issues.
Here a translation of the Errormessage from Event Viewer:
Name of the incorrect application: server_job_itemgen.exe, version: 3.9.7.1608, timestamp: 0x4eee9700Name of the faulty module: ntdll.dll, version: 10.0.16299.64, timestamp: 0xac8afc81
Exception code: 0xc0000005
Error offset: 0x0003065c
ID of the incorrect process: 0x3680
Start time of faulty application: 0x01d375c358fefab6
Path of the application with errors: C:\Mud3\server_job_itemgen. exe
Path of the faulty module: C:\Windows\SYSTEM32\ntdll.dll
Report identifier: b322e90f-f865-4d81-91a8-825e7b6aef8a
Complete name of the incorrect package:
Application ID that is relative to the incorrect package: