Following the announcement of an incoming update for SharePoint Online and OneDrive for Business to allow multiple files download at once, I’m happy to announce this is finally here.
As usual,First Release tenants are getting it first
Nothing to do on your side – except may be some end users communication. Then you just need to select multiple files from the document library and hit the Download button to get a ZIP file generated.
Keep in mind you may have to turn off your pop up blocker or allow your SharePoint Online tenant to open new window