Windows 7 Update
The new update is for automatic correction of the virtual network adapter (NIC) network problem. As reported, there were network connectivity problems after the March patch day. Fixed IP addresses were lost and there was an inadvertent change to the DHCP protocol. It was due to a bug caused by the patches in Knowledge Base KB4088875 and KB4088878. Also, the preview update that was released last week did not address the problem, users had to perform a manual correction after a tutorial at Microsoft. But now there is a remedy. Microsoft has again released a maintenance update for Windows 7.
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Details can be found in the Knowledge Base in entry KB4099950. The offered update cleans up the database of Nic adapter settings and thus bypasses the problem. By-passes is the keyword. According to Microsoft, the update KB4099950 must be used before the further updates KB408875 or KB408878, to be effective.
The update summary states:
- This update resolves issues introduced in KB4088875 and KB4088878 for Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2 SP1, where a new standard-setting Ethernet network interface card (NIC) can replace the previously existing NIC and cause network problems. Also included is an issue where the setting of the static IP address will be lost after applying the update. These symptoms can occur on physical and virtual machines with VMWare.
- Important: This update must be installed before installing KB408875 or KB408878.
The updates are available via Windows Update or in the update catalog. If you want to play it safe, you might want to wait and see what the first users will report about the update.