Applies To
	Product(s):	STAAD.Pro
	Version(s):	CONNECT Edition
	Environment:	ALL
	Area:	STAAD.Pro Download/Installation/Security/Performance
	Subarea:	Performance
	Original Author:	Payel Sasmal, Bentley Technical Support Group

Problem Description :
When I launch STAAD.Pro, this error message comes up. Uninstalling and Reinstalling didn't help.

Reason:

This may happen if there is any issue with the configuration file or there is a problem with default settings specific to the user.

Solution :

Close STAAD.Pro CONNECT Edition if it is open.

Using File Explorer, rename the folder C:\Users\<user.name>\AppData\Local\Bentley\Engineering\STAAD.Pro CONNECT Edition to something like C:\Users\<user.name>\AppData\Local\Bentley\Engineering\STAAD.Pro CONNECT Edition_1 where <user.name> is your Windows user name. 

For STAAD.Pro version 2023 a folder STAAD.Pro 2026 should be renamed to STAAD.Pro 2026_1.

Relaunch STAAD.Pro.  
This folder will get re-generated when STAAD.Pro is launched again. This should take care of the crash issue.

In case you made any customization to the interface, you may follow the instructions in the wiki below to retain those 

https://bentleysystems.service-now.com/community?id=kb_article_view&sysparm_article=KB0111404