After Effects Warning: Unknown Exception & Error report for "AfterFX.exe"

Looks like the usual security violation with the Nvidia desktop manager. You may need to install a different driver, likely in fact an older one than the latest one, though I'm not sure which ones are valid for the 4xxx series.

Mylenium

Windows 11 Home - 22H2
64.0 GB DDR4
13th Gen Intel(R) Core(TM) i9-13900K 3.00 GHz
NVIDIA GeForce RTX 4090

Crash report says:

Microsoft (R) Windows Debugger Version 10.0.25200.1003 AMD64 Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\johnk\Desktop\b0b0eaa5-3e8a-4469-8d23-2abfeeab5743.dmp] User Mini Dump File: Only registers, stack and portions of memory are available

************* Path validation summary ************** Response Time (ms) Location Deferred srv* Symbol search path is: srv* Executable search path is: Windows 10 Version 22621 (1413) MP (32 procs) Free x64 Product: WinNt Edition build lab: Windows NT 10.0.22621.1413 Machine Name: Debug session time: Sat Apr 8 23:03:08.000 2023 (UTC - 7:00) System Uptime: not available Process Uptime: 0 days 0:00:08.000 ................................................................ ................................................................ ................................................................ ................................................................ ................................................................ ...................... Loading unloaded module list ........... This dump file has an exception of interest stored in it. The stored exception information can be accessed via .ecxr. (dbcc.db08): Access violation - code c0000005 (first/second chance not available) For analysis of this file, run !analyze -v *** WARNING: Unable to verify checksum for ntdll.dll ntdll!NtDelayExecution+0x14: 00007ffe`1956f2d4 c3 ret

Nobody can tell you anything without any actual system info and other details like the actual crash report found under the "View report" link.

Mylenium