This error is appearing if the first user who has upgraded the application to the latest version populates a table within the database with a registration key based on the name of the server used in the SQL Server connection string. And if a second user from the same company is using the same SQL Connection string but different letters (lowercase instead of uppercase or vice-versa) then the issue with decoding error will appear when he starts the app.
To remove this error message follow the below steps:
Click the Help menu then click About ConQuest.
Press CTRL + F4 then type in the password (queryeditor)
Connect to database where SQL is held
Run this command DELETE FROM dbo.SoftwareKey
Press the Green play button to run.
šNote: This fix can be applied just on Network or LAN installation (with the SQL Server option on).
