Error Code: 0x800F0805 (Can't install SP1)

I tried to install SP1 to Windows 7 pro 64-bit and got error code 0X800F0805. After installing tried System update readiness tool and update SP1 again. WU says installation success, but I cannot uninstall SP1 and still can install it. Still got same error code after installing System update readiness tool. Tried also turning AV off, but it did not help. So what to do now? 

And CBS.log says 2011-02-23 12:54:20, Info                  CBS    Failed to internally open package. [HRESULT = 0x800f0805 - CBS_E_INVALID_PACKAGE]

Answer
Answer

Hello All,

 

Let's get someone to try an InPlace Upgrade then try to install SP1.  The instructions are below:

How to perform a repair installation of Windows Vista, Windows Server 2008, Windows 7 or Windows Server 2008 R2. Performing a repair installation will restore the current Windows installation to the version of the installation DVD. This also requires the installation of all updates that are not included on the installation DVD.

Note Performing a repair installation will not damage files and applications that are currently installed on your computer.

To perform a repair installation of Windows Vista, Windows Server 2008, Windows 7 or Windows Server 2008 R2, follow these steps:

1.    Close all the running applications.

2.    Insert the Windows Vista, Windows Server 2008, Windows 7 or Windows Server 2008 R2 DVD in the computer's DVD drive.

3.    In the Setup window, click Install Now.

Note If Windows does not automatically detect the DVD, follow these steps:

Click Start, and then type Drive:\setup.exe in the Start Search box.
Note The drive placeholder is the drive letter of the computer's DVD drive.

In the Programs list, click Setup.exe.

In the Setup window, click Install Now.

1.    Click Go online to obtain the latest updates for installation (recommended).

2.    Type the CD key if you are prompted to do this.

3.    Select the operating system in "Install Windows" page you want to Upgrade or Inplace.

4.    Click Yes to accept the Microsoft Software License Terms.

5.    On the Which type of installation do you want? screen, click Upgrade.

6.    When the installation is complete, restart your computer.

Please see: How to Perform an In-Place Upgrade on Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2

Cheers

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Last updated September 7, 2020 Views 53,214 Applies to: