Unfortunately, Windows overwrote my CBS.log, so I'll go by the one Ben-IS provided. Windows Resource Protection did not find any integrity violations.Įven though there are no integrity violations, we should have enough info in the log to diagnose the problem. This process will take some time.īeginning verification phase of system scan. See this KB929833 for more info on SFC and CBS (Component Based Servicing).īeginning system scan. This will run for a while and produce a file called CBS.log which you can find in %WINDIR%\Logs\CBS (usually C:\Windows\Logs\CBS). Open up a command prompt (cmd) as administrator and run We are going to use a utility called SFC (System File Checker or Windows Resource Checker), which is part of the Windows installation. This solution, in my own interpretation, is below. I can't take credit for it – all I did was spend a month weeding through the crap, retrying, and getting nowhere, until a genius by the name Ben-IS came up with exactly the right diagnosis and provided exactly the right solution. You end up with this message (code 80070490) and a failure for which there are a lot of useless "solutions" on the web that just don't work.Įxcept for one.
#Windows 7 service pack 1 fails to install update
The update starts just fine, chugs along for 10 minutes or so, then reboots the system and starts performing more operations, when suddenly one of them fails about 10% down the road, reboots, and reverts the whole process. The same problem may affect 32-bit systems as well, and I'm not sure what the update number for that would be, but the solution should work for either one.
![windows 7 service pack 1 fails to install windows 7 service pack 1 fails to install](https://3.bp.blogspot.com/-4BzhvFhJRcg/TWXA0N1_ebI/AAAAAAAAAT0/L8VlxUquNnk/s1600/ohdgh.jpg)
The problem I'm talking about today is trying to upgrade your Windows 7 installation to SP1 by applying Microsoft's update KB976932, called "Windows 7 Service Pack 1 for 圆4-based Systems" and getting nothing but a failure every time.
![windows 7 service pack 1 fails to install windows 7 service pack 1 fails to install](https://i.imgur.com/cUAsFAc.png)
![windows 7 service pack 1 fails to install windows 7 service pack 1 fails to install](https://images.drivereasy.com/wp-content/uploads/2018/04/img_5acb327c20a47.jpg)
And whenever something takes me ages, rather than write it down in my personal notes, I prefer to put it out online for everyone with the same problem to easily find and benefit from.