VMWare vSphere

Microsoft Convenience Update and VMware VMXNet3 Incompatibilities

REF: http://blogs.vmware.com/apps/2016/06/rush-post-microsoft-convenience-update-and-vmware-vmxnet3-incompatibilities.html

Microsoft recently released a Convenience Update for Windows 7 and Windows 2008 R2 which will casuse majot inconvenience if using VMXNet 3.

The announcement at https://support.microsoft.com/en-us/kb/3125574 clearly says:

Known issue in this convenience rollup
  • Known issue 1

    Symptoms

    A new Ethernet vNIC may be created with default settings in place of the previously existing vNIC, causing network issues.  Any custom settings on the previous vNIC are still persisted in the registry but unused.

    Resolution

    To resolve this issue, uninstall the convenience rollup.

    Status

    Microsoft is investigating this issue to determine proper course of action with VMWare. To resolve this issue uninstall the convenience rollup. Further information will be posted here as the investigation continues.

 

Be warned.. and always always follow change management and test systems before updating production systems.