Zip error 15 in Windows 10

So I upgraded to Windows 10 Pro, like many others have. I installed DOpus 10 and all seems to be well until I created my first zip file. I select the files to be zipped, right click and choose "Add to filename.zip". I then get a Copy File error which reads "An error occurred copying 'file': Error opening ZIP File for writing. (ZIP Error 15)". This leaves behind an empty zip file.

I'm the only user of my PC, so UAC is turned off, though I still get asked to provide admin privilege to delete folders, even if I've just created one myself. I tried elevating privileges for the current lister, but I get the same result.

If I had to guess I would say something is wrong with the permissions on your drive.

What happens if you try the same things in Explorer (right-click, Send To Compressed (zip) Folder) and deleting a folder?

That was my immediate thought.

I have found that Windows 10 has wreaked havoc with the permissions on the many drives in my PCs and on the attached network drives.

Things that worked fine in Windows 8.1 now generate access errors.

Then again, anyone who has UAC turned off is likely to provoke the wrath of Leo. Just because someone is the "the only user of my PC" is no reason for doing that.

I have 3 volumes in my PC; an SSD for Windows and Program Files, 2 HDDs in RAID-0 for games, and a bunch of drives using Stablebit Drivepool to create a 17TB drive. I've now tried creating zips on all three volumes and only see this problem on the Drivepool, so it's probably more it's fault than DOpus, though I used both on Windows 7 and never had a problem.

I checked ownership of the drivepool and found it was under "Administrators". I changed it so I was the owner, but still can't zip.

As for UAC, I prefer the simpler days of Windows 95 - without all the BSODs. :slight_smile:

What about permissions?

My experience is that software that previously gained access without problems now demands network passwords. It may be related to Microsoft trying to tie everything to a Microsoft.com account.

I naturally thought that if the Admin group has full control and I'm a member of the Admin group, that I would have full control. It seems Windows doesn't think the way I do. Giving myself full control over the volume has fixed the problem. Many thanks, Michael.

Thanks for confirming my own encounter with the eccentricities in Windows 10.

That sounds like UAC is still turned on.

In newer versions of Windows, the lowest setting in the basic UAC control panel, "Never Notify", doesn't actually turn off UAC, it just automatically clicks "Yes" to any UAC prompt. You have to go out of your way to actually turn UAC off these days.

The ability to turn off UAC entirely may be hidden because turning it off will break security features like protected-mode web browsers which reduce some threats coming outside the machine, not just the ones already in the machine that we normally think of when considering UAC.

If you really want to turn off UAC for admin accounts, User Account Control: Run all administrators in Admin Approval Mode in GPCEdit is the setting to do it in Windows 10, but you're probably better off leaving it as-is and fixing any similar file permissions issues if you run into them, like you've done here, to avoid other unwanted side-effects of turning off UAC.