Product:
Planning Analytics 2.0.5 TM1 Perspective version 11.0.5.79-0
Microsoft Windows 2016 terminal server
TM1 package connector version 10.2.6100.8-0

Issue:
When you start TM1 Perspective you get a error, if TM1 Package Connector is installed on the same computer. If you remove TM1 Package connector – then TM1 perspective works fine.

Error message:
Microsoft Excel
Missing Library c:\program files\ibm\cognos\tm1_perspective\bin\gsk8ssl.dll
C:\program files\ibm\cognos\tm1_perspective\bin\gsk8km.dll

Suggested solution:
After install of TM1 Perspective, copy the gsk8*.dll files from the c:\program files\ibm\cognos\tm1_perspective\bin folder to the package connector folder c:\program files(x86)\ibm\cognos\c10\bin folder. Overwrite the existing files.

Test to start TM1 perspective again.

If you use a older TM1 Package Connector version, then above error is also gone.