Click Start, click Run, type appwiz.cpl in the Run text box, and then click OK.How to Fix The 0×8007064e Error Step 1 – Re-Install Microsoft Security Essentials
To get rid of this problem, you should look to re-install Security Essentials, as well as a number of other programs. We’ve found that one of the big causes of problems for this error is that you will likely have a large number of different programs on your system that are trying to run at once, preventing them all from operating. This error is caused by a conflict with the Microsoft Security Essentials program, preventing your PC from being able to properly read the settings & information which it requires to help this software to operate.
Although this error is very common for Windows computers which run more than one security application, it’s a common problem which can only be fixed by using the steps outlined on this page. The 0×8007064e error is caused by Microsoft Security Essentials conflicting with another PC security tool, preventing it from being able to run the programs you require.