When prompted, select "Allow" in the "Download multiple files" notification. When you open the Downloads folder on the PC, ...

Otherwise, you'll have to connect to a Mac or a Windows PC running iTunes ... you can select your iPhone in the sidebar and select the Update button in Finder or iTunes to download and install ...

For example, you can download files from Drive to your desktop, documents on a PC, a different app ... Where do Google Drive downloads go on iPhone? When you download a file from Google Drive ...