Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I can not install important updates. Anything I download will not install.

Error message is that

Windows Installer Services cannot be accessed. This can occur if installer is not correctly installed. Contact your support personnel for assistance

When trying to download important updates, install fails with error code 80070641 & error code 641.

I have System Mechanic installed and evidently has removed my installer according to others sites I have been searching. So with this problem I cannot even download another windows installer and I am going to upgrade to Windows 7.

My question is will I be able to install 7 without this installer?

share|improve this question
add comment

1 Answer

I would remove System Mechanic to start with. Then see if you can install/reinstall Windows Installer.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.