SSL Error 61 : You have not chosen to trust “Symantec Class 3 Secure Server CA – G4”, the issuer of the server’s security certificate ( Fix )
In SSl Error 61 error you may get different issuer name in place of “Symantec Class 3 Secure Server CA”, still this same fix apply for this error.
Root cause of this error is client system on which this error is occurred is using old Citrix client like
Citrix 10.2 or Citrix 10.X version
To Fix this problem,
Install latest version of Citrix client ( also called as Citrix Receiver or Citrix ICA client )
At the time of writing this article current version of Citrix client for windows is
Receiver for Windows 4.4.100
Windows 10, 8.1, 8, 7, Vista, 2008, 2008R2, Thin PC as well as Windows Server 2012 and 2012R2.
Also Refer Citrix Article