ShareX Assembly Blocked by Windows Smart App Control

Author: itsharrysheltonCreated May 16, 2026Updated Sep 15, 2026

Loading ShareX on Windows 11 Pro 25H2 (26200.8457) resulted in the below crash. App Version: Latest Release Build - 20.1

System.IO.FileLoadException: Could not load file or assembly 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'. An Application Control policy has blocked this file. (0x800711C7)
File name: 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'
   at ShareX.Program.Run()
   at ShareX.Program.Main(String[] args)

ShareX 20.1
2026-05-16 22:54:08.127 - ShareX continue.
2026-05-16 22:55:02.088 - Unhandled exception:
System.IO.FileLoadException: Could not load file or assembly 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'. An Application Control policy has blocked this file. (0x800711C7)
File name: 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'
   at ShareX.Program.Run()
   at ShareX.Program.Main(String[] args)

ShareX 20.1
2026-05-16 22:55:07.918 - File opened: C:\ShareX\Logs\ShareX-Log-2026-05.txt
2026-05-16 22:55:18.302 - URL opened: https://github.com/ShareX/ShareX/issues?q=is%3Aissue
2026-05-16 22:56:32.909 - ShareX continue.
2026-05-16 22:56:36.839 - Unhandled exception:
System.IO.FileLoadException: Could not load file or assembly 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'. An Application Control policy has blocked this file. (0x800711C7)
File name: 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'
   at ShareX.Program.Run()
   at ShareX.Program.Main(String[] args)

ShareX 20.1
2026-05-16 22:56:59.122 - ShareX continue.
2026-05-16 22:57:04.102 - Unhandled exception:
System.IO.FileLoadException: Could not load file or assembly 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'. An Application Control policy has blocked this file. (0x800711C7)
File name: 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'
   at ShareX.Program.Run()
   at ShareX.Program.Main(String[] args)

ShareX 20.1

Setting Windows Defender Smart App Control to "off" allowed the application to load afterwards; never seen happen before for ShareX. Can re-enable the Smart App Control and all features work okay, just seems to be when loading app.

ShareX-Log-2026-05.txt.

Windows Errors as:

Faulting application name: ShareX.exe, version: 20.1.0.0, time stamp: 0x69c40000
Faulting module name: KERNELBASE.dll, version: 10.0.26100.8457, time stamp: 0x18603c3f
Exception code: 0xe0434352
Fault offset: 0x00000000000bfe0a
Faulting process id: 0xC80
Faulting application start time: 0x1DCE57EEE1278CC
Faulting application path: C:\Program Files\ShareX\ShareX.exe
Faulting module path: C:\WINDOWS\System32\KERNELBASE.dll
Report Id: 93f121bb-13e2-4143-b110-b2e60c4daa19
Faulting package full name: 
Faulting package-relative application ID:

Application: ShareX.exe
CoreCLR Version: 9.0.1526.17522
.NET Version: 9.0.15
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileLoadException: Could not load file or assembly 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'. An Application Control policy has blocked this file. (0x800711C7)
File name: 'C:\Program Files\ShareX\ShareX.UploadersLib.dll'
   at ShareX.Program.Run()
   at ShareX.Program.Main(String[] args)

Source: ShareX/ShareX

View original on GitHub View discussion on GitHub