Safari update 14.0.1 issue uploading files

I upgraded my OS from Mohave to Big Sur 11.1 and the problem is solved - My understanding is that the new version of Safari is integrated into the new OS. Now the Upload button works on all sites that I tried - Amazon, Shopify, Etc...

It has to do with HTML multipart/formdata and the fix is described here:

https://stackoverflow.com/questions/64843459/input-type-file-on-html-form-not-working-on-safari-version-14-0-1-14610-2-11-51

and consists of writing an “accept” for the filetype, e.g.

<input type="file" accept=".xls,.xlsx,.xlsb,.txt,.csv,.tsv” />

It worked for me.

IT WORKS!!!.. The latest 14.0.3 fixed this upload bug!!..

only took 4 months... wow..



While Safari 14.0.2 still had the issue for me - the (currently) latest versin v14.0.3 did solve the issue.

So I can finally upload assets again using Safari :)

The following fix worked for someone on my team. I am on the same Safari Version, 14.0.2 (15610.3.7.1.10, 15610), Catalina 10.15.7, but I do not have the issue and cannot test it directly.

1)Enable the develop menu from Safari->Preferences->Advanced->Show Develop menu in menu bar (a checkbox)

2)From the newly visible Develop menu bar dropdown, enable Disable Local File Restrictions

Hope it helps!

I think the setting being referred to above is "Enable Content Blockers", but it doesn't help me (macOS 10.14.6 / Safari 14.0.1)

What's odd about this problem is that some sites seem to allow file browsing while others don't. A good site to test against is outlook.office365.com - this site hasn't allowed me to browse for a local file (to attach to an e-mail) for about a month now, although drag & drop works fine (as a workaround)

excellent_username wrote:

The following fix worked for someone on my team. I am on the same Safari Version, 14.0.2 (15610.3.7.1.10, 15610), Catalina 10.15.7, but I do not have the issue and cannot test it directly.

1)Enable the develop menu from Safari->Preferences->Advanced->Show Develop menu in menu bar (a checkbox)

2)From the newly visible Develop menu bar dropdown, enable Disable Local File Restrictions

Hope it helps!

Has anyone tried the above with Safari 14.0.1 or 14.0.2 on 10.14.6? Does that solve the issue? If it doesn't work, I'm curious to know if enabling the Allow JavaScript from Apple Events found in the Develop menu could help...

I for myself restored Mojave from the Recovery partition, and then updated all but Safari 14.0.1 and 14.0.2, and the upload functionality is working again. That in turn broke my Xcode and MacPorts installation, but reinstalling the Command Line Tools made them work properly too...

This is a code issue between Mojave and Safari. In Mojave 10.14.6 and Safari 14.0.1 and 14.0.2. This first started when Safari 14.0.1 came out. I started noticing the inability to attach files of any type to emails. I was able to confirm that in Firefox, attachments worked without issue. I then thought I would wait for Apple to update soon. This was my hope when Safari 14.0.2 came out but No Joy!. So, I then called Apple and the usual diagnostic trials began from checking user settings to reloading Mojave. Following a hour of reloading Mojave, all was back to normal but when you reload Mojave it takes Safari back to 14.0 Then a couple days later the "Update Message" came up and I thought OK....WRONG!!!!!! 14.0.1 loaded and no more attachments via file selection. Then update Safari with 14.0.2 and still no ability to select attachments. You can drag and drop but cannot select and attach.

Like many folks I have not moved out of Mojave because of 32 bit software I don't want to move away from.

I hope Apple will get going on this as their help desks are wasting a lot of time walking people through reloading Mojave. Seeing people on this forum wondering why this issue has not been resolved is a bit frustrating. Once again we are at the mercy of Apple to either hope for a solution our spend a lot of money to either upgrade computers or purchase expensive software. Planned corporate obsolescence!!!

So I tried drag and drop again for uploading files, and I was able to upload a file of 400kb to a Gmail email and also to a collaborative work site. I think the key is that you have to be precise about exactly where you drop the file (ie precisely inside the box that appears that says "drop files here").

So I guess I'll do that for now instead of reinstalling Mojave. And wait to see if Apple fixes the issue.

If the issue is related to Adobe Flash Player, as some have suggested, surely it have to be fixed soon, since Flash Player is going away and sites will have to alter their function accordingly.

I have the same issue. I did not notice 'when' it started happening, in relation to an update, but yes... back around the same time that you posted this question, the "Attach Files" button in Gmail quit working AND the "Select Files" button for uploading in YouTube quit working. I have still been able to 'attach' and 'upload' but I have to "drag and drop" files rather than select them through the navigation window.

My wife recently had a similar issue on her Mac. I explained my issue/work around to her, and she told me that somebody suggested trying Chrome instead of Safari. Today I downloaded Chrome, and using it the "attach" and "select" buttons work just like they should. So, it must be a Safari issue.

While I was asking an online support person about Safari 14.02 working with Catalina, I found that 14.03 Safari suddenly showed up in my updates list. Installed it and it works. Thanks to everyone. Hopefully Apple will learn from this (but I don't plan on holding my breath...Covid or no Covid!)

For websites where you can drag and drop files to upload, like gmail and google drive, doing so will upload the file. Only the upload or attach BUTTON seems to not work.

I have installed today Safari 14.0.3 from updates and file uploading problem is solved. I am running on Mojave 10.14.6

Safari 14.0.x work fine on Big Sur (on my M1 Mac mini) it is just Mojave on the Intel Mac mini with the issue. Unfortunately I need 32 bit for software development and certain printer and scanner drivers. My solution was to reinstall Mojave and do the updates but NOT the Safari 14.0.1 and 14.0.2 updates. 14.0 is fine.

I downloaded OS Catalina from the link supplied by Tootsall222 above (many thanks for that), upgraded my system to Catalina and hey presto - all working fine now, issue resolved!!