TMG and certificates

Problem: When you want to create a new listener for TMG FF and after you import the certificate, you will get this error  “Incorrectly installed” or “Private key handle error” , even your Certificate Chain installed in the Trusted Root and the certificate seem to be OK

FIX:

it seem that using the Import Certificate wizard from Windows Explorer not storing the certificate in the correct location, and the fix is to import the certificate manually.

How:

• Open the Certificate Manager Snap-in, Local machine. 
• Right-click on the folder “Personal” and chose “All Tasks”
• Click Import…

The Certificate Import Wizard is now opened, just follow the steps in the wizard. Where you need to choose a Certificate Store, leave the default option and click next.

Now you can create the listener,and it will work