Server Error in '/eXBace' Application.
Server Error in '/eXBace' Application.
Access to the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.LKey.lic.k' is denied.

Solution :
Regarding this issue you are requested to please open Registry Editor (Open Run > regedit).
Expand HKEY_LOCAL_MACHINE >> SOFTWARE >> Classes
Right Click on Classes tab > Permissions...
Here, Click on Add Button.
Go to Advance > Click on Find now
Grant Read/Write Permission to the following user to access this key (HKEY_LOCAL_MACHINE\SOFTWARE\Classes)
Provide full control to this user.
After that just restart the application.
Hope this helps.