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I recently encountered a .NET Framework setup problem that is not described in my previously published .NET Framework hotfix/service pack troubleshooting guide while doing some testing for the upcoming version of Windows Media Center. I installed a computer with Windows XP Media Center Edition 2005, the .NET Framework 1.1 and .NET Framework hotfix 886904 (MS05-004). Then I went to Windows Update and found that it detected that I needed to install the .NET Framework 1.1 SP1 and it classified this as a high-priority update. When I tried to install it from Windows Update, it failed for me with a generic "installation failed" error message.
Of course, being the setup geek that I am, I wanted to figure out what was happening behind the scenes. So I downloaded the setup package for the .NET Framework 1.1 SP1 from this location and ran it with full UI (instead of letting Windows Update run it for me in silent mode). When I did this, I saw this error message:
This error message started me on the right track to find the solution to my problem. I decided to check in Add or Remove Programs first to see if there were any hotfixes for .NET Framework 1.1 listed, and I found one named Microsoft .NET Framework 1.1 hotfix (KB886904) . Once I uninstalled that hotfix and rebooted, I was able to return to Windows Update and successfully install the .NET Framework 1.1 SP1.
Ordinarily, .NET Framework service packs have logic built into their setup packages to automatically uninstall hotfixes and then apply the SP. That was not possible in this scenario because the fix for MS05-004 was not included in .NET Framework 1.1 SP1. The underlying security vulnerability was found after .NET 1.1 SP1 was tested and signed off on within Microsoft but before it went live on Windows Update. Since .NET 1.1 SP1 did not have this fix, it did not have knowledge of the hotfix package for MS05-004 and was not able to automatically remove it. That is also why you see a new version of MS05-004 offered on Windows Update immediately after you install .NET Framework 1.1 SP1 (this time it is named KB886903 instead of KB886904). Future service packs for the .NET Framework 1.1 will have the fix for this issue included, so you will not see this error message if, for example, you try to install the .NET Framework 1.1 SP2 on a computer with 1.1 and KB886904 installed in the future when 1.1 SP2 is available.
It is unfortunate that this type of setup scenario leads to a generic failure on Windows Update and does not help the average user find the solution to the problem. I am not sure how many computers will have the exact combination of .NET 1.1 + MS05-004 installed before trying to install .NET 1.1 SP1, but hopefully if anyone does run into this they will be able to use the lesson I learned above to resolve the problem.
Comments
- Anonymous
November 04, 2005
Hi I appreciate you taking the time to write this. i have a similar problem with the .net SP 1 failing install and im going to try your trick and se eif it works!!! i was wondering how you figured out which hotfix to uninstall since all mine are listed as generic Window sXP hotfix-KBxxxxxx in the add remove programs and there is 45 of them. did you look up each one and then have to correllate which were relate to .net ...or did you just kow
or is there somewhere else to look - Anonymous
November 06, 2005
Hi .net_hotfix_notfixed - .NET Framework hotfixes are listed separately from Windows XP hotfixes, so you should be able to locate it by looking for hotfixes that begin with the name "Microsoft .NET Framework" Please contact me at http://blogs.msdn.com/astebner/contact.aspx if you have trouble getting this issue solved so that you can get the .NET Framework 1.1 SP1 to install successfully. - Anonymous
December 05, 2005
The comment has been removed - Anonymous
January 09, 2006
The comment has been removed - Anonymous
January 10, 2006
The comment has been removed - Anonymous
December 07, 2010
I am trying to install windows vista service pack 1 and i keep getting a failed response with error 80070005. i looked at my update history and it just wont take. i notice that it installed the service pack 2. I am confused and have no clue what or how to get this installed. Why wouldn't it install the service pack 1 but installed service pack 2. please help me understand or what i can do to help fix this. thank you