0x00000007 error when you start a computer into Windows Recovery Environment in Windows 8.1

Applies to: Windows 8.1 EnterpriseWindows 8.1 ProWindows 8.1


Assume that you have a computer that is running Windows 8.1 or Windows RT 8.1. The computer uses the Windows image file (WIM) boot feature, and the computer has 1 gigabyte (GB) RAM. In this situation, this issue occurs. 


This issue occurs because the Windows Boot Manager (Bootmgr.exe) allocates a large temporarily buffer in RAM to read the WIM file when the computer starts into Windows Recovery Environment (Windows RE). When the computer has 1 GB RAM, the allocation fails.  

How to obtain this update or hotfix

To resolve this issue, we have released a hotfix for Windows 8.1 and Windows RT 8.1. We also have released an update rollup for Windows 8.1 and Windows RT 8.1. 

Before you install this hotfix, check the prerequisite of the hotfix.

The update rollup fixes many other issues in addition to the issue that the hotfix fixes. We recommend that you use the update rollup. The update rollup is larger than the hotfix. Therefore, the update rollup takes longer to download.

Update for Windows 8.1 and Windows RT 8.1

The following update rollup is available:

Hotfix for Windows 8.1 and Windows RT 8.1

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website: Note The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Hotfix detail information

To apply this hotfix, you must first install the update 2919355 on Windows 8.1 or Windows RT 8.1.  For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2919355 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 Update April, 2014
Registry information
To use the hotfix in this package, you do not have to make any changes to the registry.
Restart requirement
You have to restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace a previously released hotfix.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates