Enterprise security teams must prioritize the upgrade to version 6.10.0 or later immediately. Furthermore, this incident highlights the critical importance of securing management infrastructure—the very tools used to monitor security must be secured first to prevent them from becoming the weakest link in the defense chain.
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To fix this, you must manually "teach" your Windows 7 or Server 2008 R2 VM how to understand SHA-2 signatures before attempting the VMware Tools install. You need to install two specific Microsoft update packages: vmware 78708