My computer not updated

My computer is updated automatically every day, but it has not updated at all for the past year.  When I check the updates, a message appears that says "failed" and when I look to see the list of things that try to update, they all say "failed."  When it seaches updates, a code appears which says "error" with a group of numbers after him.  Because of the computer is unable to update, I'm no longer able to print or open all Microsoft programs, such as Word or Exel.  When I try to open these programs, he told me that not to upgrade the computer could affect the stability of the computer and that I would need to go to Windows Update to install the new updates.  When I open Windows Update, it says I must first install an update from Windows Update.  I clicked on 'Install now' and he tries to install, but then just goes back to the original page.

The other night I went online to see what I could do about it.  Several Internet sites said that the problem is most likely in the catroot2 folder and change the name of this catroot2old folder could solve the problem.  I tried this and it would allow me to change the name.  Now I don't know what else to do.  Help, please!

When it seaches updates, a code appears which says "error" with a group of numbers after him.

And what are the error messages and lots of numbers after each error message?

Please also inform what your operating system is including service pack level and whether or not you have scanned for virus/malware etc.

A year is a long time to go without updating.

For info how to troubleshoot Windows Update, Microsoft Update and Windows Server Update Services installation common problems
http://support.Microsoft.com/kb/906602

You cannot install some programs or updates
http://support.Microsoft.com/kb/822798
TaurArian [MVP] 2005-2010 - Update Services

Tags: Windows

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