Hello. Similar to the thread here (https://community.norton.com/en/forums/google-drive-sub-site-being-blocked-norton-dns-doc-0c-20-docsgoogleusercontentcom) please unblock the following subdomains in Norton ConnectSafe:
- doc-08-3o-docs.googleusercontent.com
- doc-00-3o-docs.googleusercontent.com
Thanks.