@Spishak462 do you have any security software that has settings for "email scanning"? Also, what version of MailWasher? Would you happen to know if the requirements for MailWasher include .NET Framework? ------ EDIT: Following copied from MailWasher site - FAQ... What are the minimum requirements to run MailWasher Pro? Answer: Windows XP, Windows Vista or Windows 7 with .NET 4 1GB of RAM, 64Mb of disk space recommended, and an Internet connection. ------ Just a guess here, it might be a .NET issue, since WFC was upgraded to .NET 4.5.2... it could be a clash between the two 4.x.x releases. What .NET version do you have installed at the moment? Do your issues exist if you just use W7F without WFC (eg: don't load WFC at startup or uninstall)?