With the newer versions of Ektron, we have seen the below error occur with Windows Server 2012 R2. This issue has shown in the registration log during a Solr install, as well as a rebuild of 9.0x. The reason coming from on the 2008 R2 server is that this key was disabled. It was enabled on the 2012 instance.
DefaultCmsService.Get: [InvalidOperationException] This
implementation is not part of the Windows Platform FIPS validated cryptographic
algorithms.
at System.Security.Cryptography.MD5CryptoServiceProvider..ctor()
Go to Start > Run and type in "regedit" without the quotes. Then press Enter or click OK. Drill down the following path
HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > Lsa > FipsalgorithmPolicy
Disable registry key (set to zero), by changing “Enabled” to “Disabled”
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