I'm wondering if anyone else has been having problems with Windows recently? I'm running Windows 7 and have tried updating the virus definition for Microsoft Security Essentials. It's a Windows Update so when I go to install it, I continue to receive an error. Likewise, I can't even open up MSE anyone as I continue to get the error code. Is anyone else experiencing this? The error code for MSE is 0x8007002 and the Windows Update fails everytime I try to install it too (error code 80070643).