reinstallwindows 7windows update
One of my Windows 7 updates (Platform update for Windows 7 64bit) failed to install. It is an optional update but I want it to install anyway. I think since the update failed I have problems opening https websites in Chrome.
How can I rerun the installation of the update? I can't find a button or something else to do that. It is simply listed as failed in my Windows Update History.
If I download the update manually (KB2670838) and run it, it says the update is already installed.
Open an administrator command prompt. Run sfc /scannow. If Windows Update files are damaged, this should fix them.
I've seen cases where sfc doesn't fix this, often but not always related to a recent malware infestation. If it can't fix a file, it will tell you that it could not repair the errors it found. If you get a message like this:
CD to an easy-to-access directory like "%userprofile%\Desktop", then run
findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >sfcdetails.txt
to pull the log events for the sfc scan and add the contents of the sfcdetails.txt to your question.
Note that if you look in the sfcdetails.txt file you may find a line like the following:
Cannot repair member file [l:14{7}]"url.dll" of Microsoft-Windows-IE-WinsockAutodialStub, Version = 6.0.5752.0, pA = PROCESSOR_ARCHITECTURE_INTEL (0), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeN
In this example, the problem is with "url.dll". You can try using Windows Search to find the newest backup copy of the file and replace it yourself. However some files, like TrustedInstaller.EXE are set so that they can only be modified by certain system processes, so you will either have to replace the file from a bootable linux disc OR reinstall. Some files will throw a fit later on if the permissions aren't correct, so if you have to use a linux boot disc to replace the file, I recommend backing up everything as soon as possible, because it may fail again eventually. If you have the time and a recent backup, I recommend doing an "in-place upgrade" reinstall by running setup from the Windows 7 disc while Windows is already running. If that doesn't work the only remaining option may be a clean reinstall.
If your log shows problems with the TrustedInstaller.exe file, you will need a linux boot disk to replace the bad copy with a good one from one of the hotfix backup folders, because Windows will only let TrustedInstaller.exe be modified by itself.
Since I've never actually seen a persistent issue with Windows Update that didn't cause SFC to report errors as well, I'm not sure if the following steps will help. I've done a bit more looking around and have found the following possible resolutions:
If you are using a third-party firewall, try temporarily disabling it, then trying to update again. If it succeeds, you will need to find the setting in your firewall that is blocking Windows Update. The easiest way to fix this is to completely uninstall your firewall, then reinstall it.
Usually in my experience, malware infections interfere with Windows Update by corrupting Windows Update files. Since this isn't the case, it is still possible that malware is blocking updates any number of alternate methods, such as DLL injection or blocking the connection. A common technique malware uses is to change your proxy settings to use a program installed on your computer as a proxy.
To check this, click start, typing configure proxy settings, then hit enter. Click LAN settings. If the proxy server address is set to localhost, 127.0.0.1, or ::1, uncheck the "Use proxy server" checkbox, click OK, then OK on the "Internet Properties" dialog, then try again.
-- Note: many web accelerators will set a proxy server like this, which is not a malware infection, but may still interfere with Windows Update. If you are using a web accelerator, uninstall it.
You should also run a full virus scan. Also, do a scan with Spybot Search&Destroy (you don't need to worry about any tracking cookies it tells you about unless you are paranoid about advertisers and your privacy, but it is a good idea to remove them anyway).
If a virus and spyware scan returns nothing, and your firewall isn't the culprit, you can run the built-in troubleshooter to try to find another solution. Click the Action Center icon in the Notification Area
then click "Open Action Center".
Click "Troubleshooting"
then "System and Security"
Click "Windows Update" then follow the directions on the screen.
Like the dialog says: reboot Windows. Then check WindowsUpdate and try to install any remaining updates. If that keeps giving an error then you can try to manually install the updates.
Best Answer
Googling
reinstalling failed windows updateturned up a number of possible answers, including this page which points out "If an update has failed to install in the past but it's listed in Installed Updates now, you don't need to "reinstall" it."Start by checking if the update is currently installed. It may be that the failed update worked on a later attempt. That would explain why downloading the update manually reports that it is already installed.
However it may be that the installation didn't install correctly. This post has a long, and fairly complicated, procedure that may help. I haven't used it though and you will have to work out it's value for yourself.
Start by checking if you have the same problems using Internet Explorer or Firefox. If the problem persists then the Windows update may be the source of the problem. If not, you've got a Chrome problem than needs investigating.