windows update 80070026 error

hey guys, something has been eating up my computer's resources over the past few days. My CPU will idle around 20%, and my memory will idle around 30%. I have dell XPS 1530 with 3.5GB of ram, and a dualcore 2.4GHZ cpu.

I was checking windows update, and it says it cannot download any updates, and it's most recent check was on 9/9/2008. I tried manually downloaded the windows vista service pack 1, but it keeps failing and giving me error 80070026.

Some people suggested I turn off things like real time protection, so I uninstalled my McAfee virus scan, and downloaded windows defender instead. I then disabled real time protection on the window's defender. Nothing else should have real time protection, so why can't I update?
 
Question Info

Last updated July 22, 2018 Views 36,765 Applies to:
Answer

Hello Slofurno,

1. Run the Microsoft Windows Malicious Software Removal Tool

2. Download, install, update and run:SUPERAntispyware (freeware) and Malwarebytes' Anti-Malware (freeware).

3. Run this online scan (in safe mode with networking, if possible):
http://onecare.live.com/site/en-us/center/howsafe.htm

4. See and follow carefully:
"Checking for/Help with Spyware, Malware and Hijackware"

If you need more help with virus-related issues, contact Microsoft Product Support Services. For support within the United States and Canada, call toll-free (866) PCSAFETY (727-2338). For support outside the United States and Canada, visit the Product Support Services Web page.

If you need more assistance for the virus/worm post to the Microsoft Newsgroup - Security - Viruses.
Via your newsreader:
news://msnews.microsoft.com/microsoft.public.security.virus
Via Web:
http://www.microsoft.com/communities/newsgroups/list/en-us/default.aspx?dg=microsoft.public.security.virus

Hope this helps.

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