Member Avatar for stranoblaze

When i try to do a Windows Update, i keep getting the following errors:

Code 80070490 and Code 643

How do i get rid of these?


Thanks

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  • Latest Post Latest Post by caperjack

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Both 80070490 and 643 are common Windows Update failure symptoms on Vista, but they usually have different root causes. Error 80070490 typically indicates corruption in the Component-Based Servicing (CBS) / update store; error 643 commonly shows when .NET Framework updates fail. confirmed Vista SP2 and that the Microsoft fixes suggested by did not resolve it. Given that, a stepwise repair sequence is the safest way to recover Windows Update.

Start by identifying the failing KB numbers in Windows Update history. Run an elevated command prompt and execute sfc /scannow to repair system files. If SFC does not fix component-store problems, run the appropriate System Update Readiness Tool (the offline SUR package for Vista), reboot, then retry updates. Next, reset the update store by stopping update services, renaming the SoftwareDistribution and Catroot2 folders, and restarting services. Example commands to run from an elevated CMD:

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

If error 643 continues, treat it as a .NET issue: run the Microsoft .NET Framework Repair Tool or uninstall and reinstall the specific .NET version targeted by the failing update (use the offline .NET installer run elevated). Perform Windows Update from a Clean Boot (use msconfig to disable non-Microsoft services and startup items) to rule out third-party interference.

For targeted diagnosis collect the failing KB numbers and the HRESULT lines from %windir%\WindowsUpdate.log. Also verify free disk space and that Background Intelligent Transfer Service and Windows Installer are running. Back up important data before attempting an in-place repair install of Vista SP2, which is the last-resort fix for deep servicing-store corruption.

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Member Avatar for Rik_

It would help if you told us what version of windows you have!

We can only work with the information you give us.

Member Avatar for stranoblaze

It would help if you told us what version of windows you have!

We can only work with the information you give us.

Oops sorry....I have Windows Vista SP2

Member Avatar for caperjack

ok,there is instructions in my link for Vista

Member Avatar for stranoblaze

ok,there is instructions in my link for Vista

i tried those instructions and it still doesn't work

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