6.6.0 community server MSI rollback issue during install

I have an issue with a customer who is a government lab. Server admin has full rights to the server and they are installing on Windows 2019 (tried on Windows 2022 with the same results). They are attempting to install Couchbase 6.6.0 as part of our license server installation. They have the Couchbase Community 6.6.0 MSI file and during the installation of this MSI, it rollbacks with the following error - rolling back action [1]. No other errors, no logs that we can find. Event logs yield nothing specific. Any ideas?

Could you try installing again using msiexec /i "C:\MyPackage\Example.msi" /L*V "C:\log\example.log" and then sharing that log file?

Funny you mention that because we found a stackoverflow blog entry from 10 years ago on general MSI troubleshooting and this was the exact method to pull out a log file. Once I get that, I will post to the forum.

Yes - cut-and-pasted. Searching is a great way to start troubleshooting.