Go to the below directory and locate the file mentioned - user.config.  Rename the file, close windows and re-launch Proseries.  Please note that the user folder will be different than XXXXXX.  Best run command would be - appdata.  There you will see the local folder and can drill down to the \0.0.0.0\user.config file.  You will want to do this for both programs that you are having problems with.

C:\Users\XXXXXX\AppData\Local\Intuit,_Inc.\protax21.exe_Url_5leag0hqmnnrx052avintxz33iuoxkpb\0.0.0.0\user.config