Hello Dandollars,
A few points to note before we begin with resolution.
1. This is an SSL communication issue where the certificate mismatch (when compared from what has been stored in the IAAS database) occurs.
Solution:
Perform the following steps on IAAS server
Navigate to the following directory:
1. ‘C:\Program Files (x86)\VMware\vCAC\Server\Model Manager Data\Cafe’ using command prompt.
2. Run vcac-config.exe UpdateServerCertificates -d vCAC -s servername
here vcac is the database name you created during IAAS installation, server name is the name of the server where SQL is installed.
3. Type the command iisreset
4. Wait for IIS to restart and re-launch browser, try to login. It should solve the issue.
Note: Many a times, reboot of the IAAS server may be required!