In the second tab of the program, I changed nothing. Try restoring to the prior state, and use this option to exclude your browsers:
What is "add keyword" button?
This is a very useful feature to improve security, if after you run WRC, some applications can not run, you can restore your registry by WRC and add the application's name to the exclusion list, then all entries that refer to the application will be ignored. For example: your "Thunder bird" can not work after run WRC, you can undo the cleanup by WRC, then add "Thunder bird" to the exclusion list, all entries that refer to "Thunder bird" will be ignored when you next time to run WRC.
