Month: April 2026

VCF Upgrade Precheck Error “vSphere SHA-1 validation failed”

Shahrouz

Before upgrading VMware Cloud Foundation (VCF) to a newer release, you should first run an upgrade pre-check to ensure there are no issues that could arise during the upgrade. Recently, I helped one of our customers plan and execute the VCF upgrade from VCF 5.2.2 to 9.0.2, and we completed the Upgrade Precheck to ensure everything was in order! There are some expected errors, such as updating the vSAN HCL and the VCF LCM Manifest file, which are straightforward to resolve.

Besides the usual errors, we also faced “ERROR vSphere SHA-1 validation failed” and without addressing this issue, we shouldn’t continue the upgrade. This issue came up because the SHA-1 hashing algorithm was used to sign vCenter Server SSL certificates. VCF requires stronger algorithms, like SHA-256, for certificate signing.

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Where Did Host Commissioning Go in VCF 9.0?

Sadaf

If you’ve worked with earlier versions of VMware Cloud Foundation, you probably remember that host commissioning was handled directly within SDDC Manager. It was straightforward, centralized, and exactly where you expected it to be. With VCF 9.x, that’s no longer the case.

The Initial Confusion

When approaching host commissioning in VCF 9.0 for the first time, it’s easy to assume the functionality has moved to VCF Operations, since it’s a pane-of-glass management for almost 90% of tasks. But that’s not where it lives.

The New Reality: It’s in vSphere

After a bit of digging, you’ll discover that host commissioning has actually moved into vSphere, specifically within the management domain’s vCenter.


Here’s how to find it:

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