Problems with Windows 7 SP1 Installation?


Windows updates – don’t you just love them? If you own a PC they are a constant source of annoyance popping up at the most inconvenient times.

Mind you, having said that, more often than not they download without incident.

But Windows 7 SP1 has just been released this week (available for download now) and seems to be causing a few problems.

It doesn’t actually offer any new features but does include all the previous updates which were delivered through Windows update. And so the problems start. If you regularly update Windows 7 and there are no problems with you PC’s performance you don’t need to install Windows 7 SP1.

If you’ve never updated your PC (shame on you) there is a chance you may encounter a problem or two (actually there are 7 potential issues) – here goes:

Problem 1:

Installation error 0x800FOA12 (Windows 7 SP1 or Windows Server 2008 R2) means the installer can’t access the system partition of your computer’s hard disk to update the files (click here for Microsoft’s solution).


This partition is usually accessible to Windows (but can’t be browsed in Windows Explorer). In some cases access to it may be blocked after Windows has started. For example:

  • The system partition isn’t automatically mounted, or made accessible to Windows, during start-up
  • A hard disk containing the system partition was removed prior to beginning SP1 installation
  • Windows is running on a storage area network (SAN) and access to the system partition has been disabled
  • A disk management tool from another software manufacturer was used to copy (or clone) the disk partition on which you’re trying to install SP1

Problem 2:

You may get an “Installation was not successful” error message due to your Antivirus, Anti-Spyware programs and inconsistency in the Windows Servicing Store.


Try the System Update Readiness Tool which may be able to help fix problems that might prevent Windows updates and service packs from installing.

Problem 3:

If you try to install SP1 with Microsoft Security Essentials or Microsoft Forefront Client Security already installed on your computer, your security program might prevent the successful installation of the service pack.


Uninstall both and re-install later.

Problem 4:

If you get the “Windows has detected unsupported languages files” error message, opt for the standard Languages in W7 and start the installation


SP1 can only be installed on a computer that is running a German, Spanish, French, English, or Japanese version of Windows 7 or Windows Server 2008 R2.

Problem 5:

Samsung Galaxy S phone drivers, Chrome 10 and 11, EVGA Precision Utility 2.0.2, and Third Party firewalls may cause the installation error in Windows 7 SP1.


Uninstall these if they are present before you start SP1 installation

Problem 6:

If you get Windows 7 Update error code FFFFFFFE it may be caused by a virus infection.


To solve this problem, reinstall Windows 7 using the Custom installation option and format the hard disk.

Problem 7:

If you see Windows 7 Update error is 84C40007 (for Windows Server 2008), it means an update to SQL Server 2008 can’t be installed because of a problem with a .NET Framework installation.


To solve this problem, you need to install the full Microsoft .NET Framework 4 package.

Hopefully that should help you solve any problems you may be having with the Windows 7 SP1 download.

Author: MPM Computer Consultancy provides IT Services, Support and Training to sole traders and small businesses in Ipswich. Bury St Edmunds and surrounding villages.