Cherwell: Fix "Culture is not supported, treb-inv is an invalid culture identifier" Error

Resolving the "treb-inv" Error

Some users may have an issue opening tickets within Cherwell due to an error that states:

"Culture is not supported, treb-inv is an invalid culture identifier."

If you are experiencing this error, please follow the steps below.


1. Open a Run prompt (hold windows key and tap "R")

2. Type "regedit" and press enter

3. Navigate to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\CustomLocale

The screenshot below has been edited to condense the directory selections; your registry will not look identical to the image below.



4. Click the Edit drop down menu and select New > String Value

regedit string value


5. Name it treb-inv

treb-inv name


6. Double click the new treb-inv entry, and enter treb-inv in the Value data field of the pop up menu.

treb-inv value pop up menu


7. Close regedit




4/1/2020 4:37:05 PM