I had found an “answer” at Microsoft Answers referring back to Windows Vista titled “When I tried to backup my files, I recieved an error (0x80070013) saying that media is write protected”(sic). But the delivery style is a bit murky (ok, THAT is an understatement!), such that I’m not sure what I had read. The posting lives here– https://answers.microsoft.com/en-us/windows/forum/windows_vista-files/when-i-tried-to-backup-my-files-i-recieved-an/2f66e3f2-c1b7-44b2-8fc2-8865b45b212c.[/FONT]
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When looking at my portable backup drive root directory/folder, a unit which is attached to a freshly feature-updated Windows 10-1809 box, I found that the Users group had Read & Execute, List Folder Contents, and Read permissions, but did NOT have Write permission. I normally use my computer in a Standard user account, which I think means my permissions level is covered by the Users group permissions. So, since the Backup & Restore app seems to be running in a Standard user context when I am in my “everyday use” account (I do not recall ever seeing a request for elevation when I manually invoked Backup & Restore in my usual account), is this why I keep getting such an error?
Though, if it IS doing that, it doesn’t make sense, because I then tried, in the course of troubleshooting, logging into my Administrator account to manually run Backup and Restore there. The operation seemed to go ok, but ended with the same error. It does not immediately bomb out…it runs for nearly a 3/4 of an hour, as near as I can tell, before throwing its digital hands up complaining “I can’t WRITE!” What am I missing when trying to understand the previously mentioned “answer”? I am the owner, though the Owner group is not explicitly present in the group permissions. The groups I do see for the portable backup drive are: Everyone, Authenticated Users, SYSTEM, Administrators [local], and Users [local]. All these groups, EXCEPT for Users, have Write permission. I have no problem “restoring” files from the drive, just in making fresh backups since the Windows 10-1809 feature update.
I do not understand the “Junction” information in the “Microsoft Answers” posting. It might be germane, but I really could use a translation into MY version of English. *soft chuckle* I just wondered if the answer in my case is simpler than all the “Junction” talk makes it appear in the article there.