"Key not valid for use in specified state" when opening FYI Desktop App

Issue
I am trying to open the FYI Desktop App. It does not start and gives the following error:
"Key not valid for use in specified state".

Cause
A file required to run the application is corrupt and this is preventing the FYI Desktop App from opening.

Solution

1. In Windows Explorer navigate to the folder AppData\Roaming,
   This is usually under the folder Users\yourname.
   
   Note: The AppData folder is a system file so may be hidden. If you do not see it, in the Windows Explore View menu, select Options and in the Folder Options - View tab, select Show hidden files, folders and drives.
   
   
2. Within the folder AppData\Roaming, delete the folder FYI Desktop.
   
   
3. Reinstall the FYI Desktop App. Refer to FYI Desktop App or Installing the FYI Desktop App for MSI installation for terminal servers.
   
   If the issue persists, please contact the FYI Support Team at support@fyidocs.com.