**The above is the full error message.
Solution 1:
Step 1 - Right Click QnE Icon > Click Open file location.
Step 2 - Look for 'Winapp.exe.config'
Note: Delete this highlighted due to it already corrupted. And re-append database.
Solution 2:
Step 1 - Right Click QnE Icon > Click Open file location.
Step 2 - Look for 'Winapp.exe.config.bak'
Step 3 - Right Click 'Winapp.exe.config.bak' > Open with
Step 4 - Select Notepad.
Step 5 - Press 'CTRL + A' (Highlight everything) > Press 'CTRL + C' , Copy.
Step 6 - Right Click 'Winapp.exe.config' > Open with Notepad.
Step 7 - Press 'CTRL + A' > Press 'CTRL + V' , Paste the value into the corrupted 'WinApp.exe.config' > Click Save
Open QnE, and no need to re-append Database.
Thanks.