Make sure to perform a complete backup of your system before performing the following steps.

1. Remove the \App_Browsers\Default.browser file.
   
   
2. Go to Host > Extensions and uninstall Optimizer module. It's recommended to keep files on the system by leaving the "Delete Files" checkbox unchecked.
    
3. Go to Host > Schedule and remove "RevindexOptimizer.*" scheduler item.
         
4. It's not necessary to delete module files. Leaving module files on the system will not consume memory or CPU when unused. Deleting library files may affect other modules that rely on any shared assemblies. The following files may be deleted if absolutely necessary:
   
   bin\Revindex.*.dll
   DesktopModules\Revindex.Dnn.RevindexOptimizer\*