Troubleshooting error: Windows 7 SP1 installation was not successful

RECOMMENDED: Click here to fix Windows errors and optimize system performance

Microsoft should release Windows 7 SP1 in July 2010. If you receive an error message Installation failed when installing Service Pack 1 for Windows 7 or Windows Server 2008 R2, you should check these troubleshooting steps.

The most frequent causes of this problem are:

  • An inconsistency in the Windows Servicing Store. The Windows Service Store is a necessary feature to successfully install Service Packs.
  • A program on your computer, such as an antivirus or antispyware program, interferes with the installation of the Service Pack.

To solve this problem, first download the System Update Readiness Tool. The system update preparation tool can help you resolve problems that may prevent the installation of Windows updates and Service Packs.

January 2021 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


After running the system update preparation tool, try installing the Service Pack again.

If you still can’t install the Service Pack, follow these steps :

  1. Delete all temporary files using the disk cleaning utility.
  2. Restart your computer.
  3. After rebooting, disable any antivirus and anti-spyware programs that may run during the boot process.
  4. Try reinstalling the Service Pack.
  5. After installing the Service Pack, activate all antivirus and anti-spyware programs.

Delivered by : Windows Help

Note that Service Pack 1 (SP1) Beta for Windows 7 and Windows Server 2008 R2 can only be installed on a computer with a German, Spanish, French, English or Japanese version of Windows 7 or Windows Server 2008 R2.

RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance

Related Video