vCenter 6.5 upgrade did not recognise vSphere 6.0 Platform Service Controller version

When I tried to upgrade my lab environment from vCenter 6.0 with external PSC to vCenter 5.5, I ran in to an annoying issue. I tried to upgrade my PSC, but the installer was not able to determine the version from my current PSC. It assumed it was 5.5 and I had to confirm this, which of course, I did not. No way to tell it it was really 6.0 …

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Invalid credentials message when registering vCenter Server with external Platform Service Controller in vSphere 6

When vSphere 6 was released, I decided to delete my RTM version of my external Platform service Controller and vCenter Server appliances, to replace them by the GA versions.

Installing the PSC went fine, but when installing the vCenter appliance, I was not able to register it to the PSC. I kept getting the message “Invalid credentials” every time I entered the SSO administrator password. Redeployed the PSC several time, using different passwords, but no luck registering the VCSA.

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