Cubase Crashes Repeatedly on Windows 11

Cubase 15 is crashing all the time on Windows 11. Sometimes it crashes without warning upon starting a new project, while working on a project, exporting audio, etc. Attached is a crash dump file. Appreciate any help—this is costing me time and money.

Cubase 15.0.5 64bit2025.11.10 11.47.03.147.dmp (3.8 MB)

Looking at that I’d see if there is something related to Kontakt 7 or repair your VC runtime DLLs.

WRITE_ADDRESS: 000000000000001f

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

EXCEPTION_CODE_STR: c0000005

EXCEPTION_PARAMETER1: 0000000000000001

EXCEPTION_PARAMETER2: 000000000000001f

STACK_TEXT:
0000000000108e18 00007ffadddffd11 : 0000000000109e90 000000000010bff8 00007ffae131ecb5 000000000010bfc4 : VCRUNTIME140!memcpy+0x106
0000000000108e20 0000000000109e90 : 000000000010bff8 00007ffae131ecb5 000000000010bfc4 00007ffae131ecb7 : Kontakt_7+0x67fd11
0000000000108e28 000000000010bff8 : 00007ffae131ecb5 000000000010bfc4 00007ffae131ecb7 00007ffae0f95806 : 0x109e90
0000000000108e30 00007ffae131ecb5 : 000000000010bfc4 00007ffae131ecb7 00007ffae0f95806 000000000010bfc4 : 0x10bff8
0000000000108e38 000000000010bfc4 : 00007ffae131ecb7 00007ffae0f95806 000000000010bfc4 00007ffae131ecbc : Kontakt_7+0x3b9ecb5
0000000000108e40 00007ffae131ecb7 : 00007ffae0f95806 000000000010bfc4 00007ffae131ecbc 000000000010c628 : 0x10bfc4
0000000000108e48 00007ffae0f95806 : 000000000010bfc4 00007ffae131ecbc 000000000010c628 0000000000108ea0 : Kontakt_7+0x3b9ecb7
0000000000108e50 000000000010bfc4 : 00007ffae131ecbc 000000000010c628 0000000000108ea0 00000003c4f97764 : Kontakt_7+0x3815806
0000000000108e58 00007ffae131ecbc : 000000000010c628 0000000000108ea0 00000003c4f97764 000000000010bfe4 : 0x10bfc4
0000000000108e60 000000000010c628 : 0000000000108ea0 00000003c4f97764 000000000010bfe4 00000003c4f97768 : Kontakt_7+0x3b9ecbc
0000000000108e68 0000000000108ea0 : 00000003c4f97764 000000000010bfe4 00000003c4f97768 000000000010bfe0 : 0x10c628
0000000000108e70 00000003c4f97764 : 000000000010bfe4 00000003c4f97768 000000000010bfe0 00000003c4f9776c : 0x108ea0
0000000000108e78 000000000010bfe4 : 00000003c4f97768 000000000010bfe0 00000003c4f9776c 000000000010bfdc : 0x00000003c4f97764 0000000000108e80 00000003c4f97768 : 000000000010bfe0 00000003c4f9776c 000000000010bfdc 00000003c4f9778c : 0x10bfe4 0000000000108e88 000000000010bfe0 : 00000003c4f9776c 000000000010bfdc 00000003c4f9778c 000000000010bfc0 : 0x00000003c4f97768
0000000000108e90 00000003c4f9776c : 000000000010bfdc 00000003c4f9778c 000000000010bfc0 00000003c4f97788 : 0x10bfe0
0000000000108e98 000000000010bfdc : 00000003c4f9778c 000000000010bfc0 00000003c4f97788 000000000010c1ac : 0x00000003c4f9776c 0000000000108ea0 00000003c4f9778c : 000000000010bfc0 00000003c4f97788 000000000010c1ac 000000000010bfc4 : 0x10bfdc 0000000000108ea8 000000000010bfc0 : 00000003c4f97788 000000000010c1ac 000000000010bfc4 0000000000109e90 : 0x00000003c4f9778c
0000000000108eb0 00000003c4f97788 : 000000000010c1ac 000000000010bfc4 0000000000109e90 0000000000108f60 : 0x10bfc0
0000000000108eb8 000000000010c1ac : 000000000010bfc4 0000000000109e90 0000000000108f60 00007ffae0f96575 : 0x00000003c4f97788 0000000000108ec0 000000000010bfc4 : 0000000000109e90 0000000000108f60 00007ffae0f96575 00000003c4f97780 : 0x10c1ac 0000000000108ec8 0000000000109e90 : 0000000000108f60 00007ffae0f96575 00000003c4f97780 0000000000000000 : 0x10bfc4 0000000000108ed0 0000000000108f60 : 00007ffae0f96575 00000003c4f97780 0000000000000000 0000000000108f10 : 0x109e90 0000000000108ed8 00007ffae0f96575 : 00000003c4f97780 0000000000000000 0000000000108f10 000000000010c1b0 : 0x108f60 0000000000108ee0 00000003c4f97780 : 0000000000000000 0000000000108f10 000000000010c1b0 00007ffae131ecb0 : Kontakt_7+0x3816575 0000000000108ee8 0000000000000000 : 0000000000108f10 000000000010c1b0 00007ffae131ecb0 0000000000000993 : 0x00000003c4f97780

FAULTING_SOURCE_LINE: D:\a_work\1\s\src\vctools\crt\vcruntime\src\string\amd64\memcpy.asm

FAULTING_SOURCE_FILE: D:\a_work\1\s\src\vctools\crt\vcruntime\src\string\amd64\memcpy.asm

FAULTING_SOURCE_LINE_NUMBER: 207

SYMBOL_NAME: VCRUNTIME140!memcpy+106

MODULE_NAME: VCRUNTIME140

IMAGE_NAME: VCRUNTIME140.dll

STACK_COMMAND: ~0s ; .ecxr ; kb

FAILURE_BUCKET_ID: NULL_CLASS_PTR_WRITE_c0000005_VCRUNTIME140.dll!memcpy

OS_VERSION: 10.0.26100.1

BUILDLAB_STR: ge_release