Q: windows update 80070026 error This thread is locked from future replies

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?



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):

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:
Via Web:

Hope this helps.

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Views: 36,589 Last updated: March 12, 2018 Applies to: