Often, the issue isn't with the backup software itself, but how vCenter handles the snapshot creation process during the backup window. The KB details how to check for stale snapshots and, crucially, how to manually intervene without breaking your backup chain.
To resolve this issue and successfully install VMware Tools for free, you must manually download and install two specific Microsoft security updates on your virtual machine: SHA-2 code signing support update. KB4490628: Servicing stack update (SSU). Standard Procedure: kbvmware s article 78708 free
If this matches your need I can expand into a full formal KB article, provide exact CLI commands for your ESXi version, or tailor it to ESXi 6.7/7.0/8.0—tell me which. Often, the issue isn't with the backup software
To resolve these failures, administrators must ensure the guest operating system is updated to support SHA-2 signing before attempting to install VMware Tools version 11.1.x or newer Broadcom Community Apply Microsoft Updates KB4490628: Servicing stack update (SSU)
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