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I am attempting to install Data Protector 10.3 and I am getting an error immediately getting an error when trying to open Cell Manager that states: SSL: no alternative certificate subject name matches target host name.
During the installation, there was a FAILURE for hostname validation, it stated that the hostname label must begin with an alphabet. Our server naming convention begins with a number, could this be causing this error with the SSL?
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Hello @Joel Anderon,
This is completely the problem. These are restrictions and cannot be skipped.
You can check more in this post (DP) Support Tip: Restriction for Cell Manager Hostnames
Customer Support Engineer
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Hello @Joel Anderon,
This is completely the problem. These are restrictions and cannot be skipped.
You can check more in this post (DP) Support Tip: Restriction for Cell Manager Hostnames
Customer Support Engineer
If you find that this or any other post resolves your issue, please be sure to mark it as an accepted solution.
If you are satisfied with anyone’s response please remember to give them a LIKE by clicking on the bottom at the left of the post and show your appreciation.


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Thanks for the link and the clarification. I assumed this would be the issue, I just needed to be certain. I renamed the server, and uninstalled and re-installed the 10.3 version of the software, and it opened fine without the error.