Cannot import SSL certificate using he UI

Cannot import SSL certificate using he UI

Hi all,
We have tried to import an updated SSL certificate, in .pfx format, using the the Admin\General Settings\Import SSL Certificate wizard. 
The error is: "The password entered is invalid for the certificateEndReply.pfx certificate" . The used password is correct, we have tested it by importing to the local computer store.
I have attached a screen capture, and the method used is from here:  https://help.servicedeskplus.com/introduction/install-ssl.html$Step3a

SDP Build: 9422
OS: Windows Server 2016 
DB: MSSQL 2012

Please advise. Thank you.


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