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Script Engine Exception. A ScriptEngine threw exception 'C0000005'

Shekhar's avatar
Shekhar
Icon for Microsoft rankMicrosoft
Jun 17, 2025

Script Engine Exception. A ScriptEngine threw exception 'C0000005' in 'IActiveScript::SetScriptState()' from 'CActiveScriptEngine::ReuseEngine()

Issue description: You may encounter issues when using the jscript9legacy.dll (JScript 9) JavaScript engine with Classic ASP, resulting in a Script Engine Exception. Specifically, the error message...
Updated Jul 01, 2025
Version 3.0
k9kondop's avatar
k9kondop
Copper Contributor
Nov 05, 2025

Another solution (also confirmed to work):

Open Notepad

Insert the following text:

 

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Main]

"JScriptReplacement"=dword:00000000

 

 

Save as a .REG file.

Execute the file by double clicking.

Done! :-)