Public bug reported: Download the .deb from https://zoom.us/support/download and try to "Open" it - you'll get an error message saying the tool for installing software doesn't know what to do with a software installer file.
Attached is a screenshot. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ubuntu-software (not installed) ProcVersionSignature: Ubuntu 5.4.0-38.42-generic 5.4.44 Uname: Linux 5.4.0-38-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: Unity:Unity7:ubuntu Date: Sun Jun 14 12:38:14 2020 EcryptfsInUse: Yes InstallationDate: Installed on 2012-03-23 (3004 days ago) InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) SourcePackage: gnome-software UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: gnome-software (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ** Attachment added: "Selection_670.png" https://bugs.launchpad.net/bugs/1883421/+attachment/5383749/+files/Selection_670.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883421 Title: Ubuntu Software can't install .deb files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1883421/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs