Windows 7 SP1 network bug (KB4103718/KB4103712)

win7[German]On Patchday, May 8, 2018, Microsoft has also released the updates KB4103718/KB4103712 for Windows 7 SP1 and Windows Server 2008 R2 SP1. Now there are reports, that these updates may cause network issues.


I’ve blogged about that updates within my blog post Patchday: Updates for Windows 7/8.1/Server May 2018. At the time of writing this article, only one known issue has been reported by Microsoft. But later on, some users of Windows 7 SP1 and Windows Server 2008 R2 SP1 are facing network issues. Susan Bradley mentioned it at

Microsoft has update the known issues section within the KB articles (e.g. KB4103718). The following text has been added:

Microsoft is aware that some customers have reported that network drivers are intentionally uninstalled, then fail to reinstall after applying the May 8, 2018 update. This can result in the loss of network connectivity.

Microsoft is presently investigating and will provide a status update when the investigation is complete. The only solution for affected systems is to uninstall the update.

The problem with uninstalling these updates is, that CVE-2018-8174 (Windows VBScript Engine vulnerability) won’t be fixed. But there is a solution, see my blog post 0day patch for CVE-2018-8174 available.

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