I'm trying to install plugins on a fresh install of QGIS 2.18.12. I can connect to the plugins repository but trying to install any plugin fails with the error message:
Failed to unzip plugin package. Probably it is broken or missing from the repository. You may also want to make sure that you have right permissions to the plugin directory
I've tried rebooting and and checked permissions on the repository folder. I've also tried setting an http proxy in the network settings.
None of the above have worked.