I use comfort update and when installing update 3.17.7 (190627) I get the message ComfortUpdate cannot unzip the update file (or an associated file).
I get this message on two different installations on different servers?

Looks like an issue on the Comfortupdate server. I guess the package was packed with parameters which are not compatible when depacking. As a comfort update customer you can open a support ticket to speed things up.

Thank you!