Safari 14.01 file upload fails

You do have a choice - re-install Mojave, Safari 14.0, Security Update 2020-005 & Supplemental Update 10.4.6, then Security Update 2020-006 but NOT Safari 14.0.1 and you will be back to normal. It’s surprisingly easy to do but you need to be patient as it takes a couple of hours and some of that time nothing seems to be happening.

You can re-install Mojave quite easily - see my post from Nov 20 at https://discussions.apple.com/thread/252045057

It takes several steps and a couple of hours. Ensure 'Automatically keep my Mac up to date' is NOT checked in System Preferences / Software Update before updating it to the latest Security settings WITHOUT re-installing Safari 14.0.1

Sorry, that's no help at all. Feedback Assistant is only available on MacOS Catalina or later, whose users are not affected by this bug! And it's designed for app developers, not normal users.

We Mojave users can feedback at https://www.apple.com/feedback/ but as others on these forums have said, Apple often don't take any notice. They certainly don't read these forums.

Using an alternative browser or re-installing Mojave, Safari 14.0 and associated updates but NOT Safari 14.0.1 are the only solutions

This is a bug for Safari 14.0.1 on macOS 10.14.6. Use the Feedback Assistant on your Mac to report the bug. Search "Feedback Assistant" on your Mac and submit the feedback to Apple. Apple Software engineers will ask you for additional information and fix the bug as soon as possible.

Yes, but you mean you can’t upload files from Mac TO websites. I have the same problem since updating Safari to 14.0.1 (not to be confused with iOS 14.0.1). It works fine in Firefox

This follows the fiasco on 28 September with Safari 14.0 and Security Update 2020-005, which wrecked Macs on Mojave and required an emergency Supplemental Update.

We can only hope that Apple wipe the egg off their faces quickly and fix this new glitch.

MacOS Mojave 10.4.6 / Safari 14.0.1

I have the same problem with Safari 14.0.1 that I recently downloaded after installing a new Mojave security update. Attachments won't work in email and pictures won't load on eBay's seller portal. I have to use Safari Technology Preview as a way to attach stuff now. I spent an hour on the phone with Apple support and they couldn't figure it out using screen sharing.

Thanks hankaberle.

Apple Support can’t work it out because it’s a bug that has been introduced with the latest update. Are they going to report it to the software developers?

Other browsers work normally so you could use e.g. Firefox

At this point, the only way around it is to use a different browser like Firefox or Chrome. They both work fine with the latest update (Mojave 10.14.6 Security Update 2020-006) I put in a bug report but Apple never responded.

Hi there. Me and my wife are also having this problem (we use two different machines). I've found that drag-and-droping files from finder on the "upload button" work for both of us. This is really bugging me and I hope an update is on its way.

I have the same problem, cannot load pics from my desktop to ebay, Have restarted and problem still exists. I sent a bug report to apple, however, I do not expect a reply, I have never gotten a reply from apple for ANY problem.

I am from Japan. I met the same problem since updating to Safari 14.0.1 from Safari 14.0.0 under Mojave 10.14.6 with Security Update 2020-006. At moment, I was not able to upload any files from certain academic-related websites, while no problems to download from these websites. I verified no such problems using other browsers, Chrome and MS Edge. Also, I confirmed no such problems from Safari 14.0.0 under Mojave 10.14.6 with Security Update using other desktop Mac with Mojave 10.14.6 and Safari 14.0.0. We may have to endure for a while or switch to other browsers on this occasion.

Many thanks. I verified, Firefox as well as Chrome and Edge, are working well. One trivial issue is to refuse Safari bookmarks due to unresolved reason. So, I retrieved bookmarks from Chrome successfully.

Although Apple is now aware of this bug, they refuse to admit to it. I've been having a conversation with them on Twitter Apple support and they keep pointing their fingers at me as if it were something wrong with my computer. I guess I won't be using Safari for many tasks until they upgrade again. (and maybe not after that either)

Although having to do a recovery-install is not ideal, I did it not so long ago when Apple techs were trying to eliminate (by ruling out anything amiss with my own system) the bug which can prevent updates/downloads in the MAS.

Although it didn't fix that problem, a new version of 10.14(.6) did actually help with several other things I'd had going wrong.

IOW, to do this can actually amount to good housekeeping. And when we remember that one or more people may have lost their jobs in the middle of a global pandemic for whatever caused the miscoding in Safari/the OS, it does have its positive side. Good luck!

Same problem. I have one Mac on Mojave, and it doesn't upload. I have one Mac on Catalina, and it works just fine. I have to switch to chrome on the Mojave macOS, I don't want to... but no choice now.