- You have a computer that is running Windows 8.1, Windows Server 2012 R2, Windows 7, or Windows Server 2008 R2.
- The network adapter on this computer is configured to use multiple IPv4 addresses.
- The IPv4 addresses are located in different IP subnets.
- You make a change to the IP configuration, and then you restart the computer.
In this scenario, the subnet masks may be invalid.
To resolve this issue for Windows 7 and Windows Server 2008 R2, install the hotfix that is described in this article.
Update information for Windows 8.1 and Windows Server 2012 R2For more information about how to obtain update 2919355, click the following article number to view the article in the Microsoft Knowledge Base:
Hotfix information for Windows 7 and Windows Server 2008 R2A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is 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.
PrerequisitesTo apply this hotfix, you must have Service Pack 1 for Windows 7 or Windows Server 2008 R2 installed.
Restart requirementYou do not have to restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace any previously released hotfix.
Article ID: 2923884 - Last Review: Apr 8, 2014 - Revision: 1