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NAS Access in Catalina issues

Since upgrading to Catalina my access to NAS shares is problematic.


I have a QNAP NAS unit, with APFS and SMB (1/2/3) enabled.


I can see the NAS in finder under 'Locations' but when I click on the NAS I get 'connection failed'. Using 'Connect As' does nothing at all.


I manage to connect using 'Connect to server' with the command: afp://NASNAME(AFP)._afpovertcp._tcp.local


It asks me which 'share' I want to connect and all works well.


If I then go back through finder to the same share I get the same 'connection failed' issue, even though the mounted share shows on my Desktop.


Any ideas please?

Mac mini 2018 or later

Posted on Oct 28, 2019 4:06 AM

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Question marked as Top-ranking reply

Posted on Feb 9, 2020 3:09 AM

SPOILER ALERT: this is not a solution but a "working" WORKAROUND


My actual situation:

  • I'm able to access to my NAS (SMB shares) through finder left sidebar only after a reboot
  • I'm Always able to connect to my SMB shares by "command K"
  • my NAS implements SMB v3_2 protocol


My workaround (tested working after several working time or sleep):

  • reboot the mac
  • connect to NAS through sidebar network shortcut. This will mount shares on the desktop
  • drag the shares icons on your desktop on finder sidebar but in "favorite" section (as in attached picture)


Now, every time you need to access these shares use these links on favorite sections instead of the one in network.

This definitely demonstrates that is not a "protocol connection issue" but a Finder specific issue.




Similar questions

312 replies

Jun 4, 2020 2:44 PM in response to stoobloo

I have just installed the latest Version of Catalina 10.15.5 and the only improvement I see is that Finder does not keep crashing permanently when trying to connect to my NAS (QNAP). Connections to my network drives (SMB or AFP) still does not work !

It worked without any issues in Mojave! What have you done ?


I have just bought a brand new Mac Book Pro and I use this notebook to make a living. The fact that I can't use my NAS anymore at all is a disaster.


Here is what Apple support told me: Just go back to Mojave or try to completely reset your Mac and give up your TimeMachine Backups. Maybe it works. Also the issue is probably related to my NAS and I need to contact QNAP. They need to provide a fix. Problem solved for Apple. Wow.


This is an issue that Apple has to fix it ! Why can't you just admit that something went wrong when disabling the support for older SMB Versions ?


Otherwise I tend to believe the silly rumours that this is done on purpose to push your own cloud storage services.

Jun 6, 2020 4:43 PM in response to Mike_App

@Mike_App, you need to get the folder on the desktop by mounting them with “Go > Connect to server...” in Finder. That pops up a list of shares on your folder to mount. That’s what you’ll drag to Favorites in Finder.

i also got the question mark right away before but I think it’s because I was trying to drag the folder from opening the NAS in “Locations”, not sure.


This has been working for me for a week without issue.


I did see the question mark at one point, but clicked on it and it name appeared (I think the drive remounted).

Jun 7, 2020 1:30 PM in response to Datajack

@Datajack, @Cemento,


These instructions worked for me.


FYI: I do have multiple shares, all linked to the same Synology NAS device. Some shares are now accessible via the Side Bar under Favourites, while I left the others untouched. I’m curious whether this will make any difference.


Started texting now; will report back on next occasion.

Jun 11, 2020 10:55 AM in response to bsanders44

Hi bsanders44,

Happy at least it's mitigating the pain.

But it's really sad that mother Apple is not willing to fix what clearly appears to be a trivial issue in Finder share management. There's must be a difference in what happens over the hood pushing on the network tab differently from pushing on the favorites one. Something that a SW engineer would fix in day. If only Apple would ask him to do. Really sad story from quality wise point of view.

Regarding the workaround: I can confirm that I'm using this workaround from months and a part from some question marks time-to-time I've never experienced Finder crash. Also TimeMachine is working fine.

Jun 11, 2020 11:01 AM in response to Cemento

I agree with you 100% @Cemento. The fact that this workaround improves my system's stability so much with so little effort seems to indicate that the root cause of the issue could be fixed relatively quickly and easily, if only Apple cared enough to do so.


At any rate, thank you for posting this workaround. It's incredible how much impact this issue was having on my everyday productivity. Not having to reboot at least once per day is wonderful.

Jun 28, 2020 4:46 AM in response to bsanders44

I have the same problem that I usually can't mount my Synology NAS in Catalina via the Finder sidebar. After restarting the computer or after a forced restart of the Finder, it works at first, then later does not work anymore. However, I have had the same problem with Mohave 10.14.x. The problem does not occur with multiple computers that have older systems installed. The problem is also independent of the protocol used, whether AFP or SMB, regardless of the SMB version used. For example, connections initiated by Carbon Copy Cloner (CCC) always work without problems.


I can confirm that the Cemento workaround works. Additionally I would like to point out that you can also create a folder containing alias files of the shares from the desktop or the /Volumes folder, so that not too much space is wasted in the sidebar if you have a long list of shares. My folder is called "Servers" and contains all my required shares. This always works and is a good replacement for the network bonjour functionality of the sidebar, which does not work in the Finder after a certain time. The Finder's built-in network display in the sidebar is disabled, so I don't always click on it anymore out of habit. I hope that with Big Sur Apple will finally take care of this problem, which has existed for a long time with various NAS and server solutions. Or is the main focus of Big Sur only on "cosmetics" and making the operating system look iOS-like? I hope not.


Another possibility I found is a software from the macOS App-Store called "AutoMounter". It always works fine and is handy if you have a lot of shares, so that the sidebar is not always too full. Optionally you can also use AutoMounter to set up shares to be mounted automatically. They will mount again immediately if you disconnect them by mistake. This software is an all-in-one solution for me.

Jul 3, 2020 7:51 AM in response to bsanders44

If this is a pure Finder problem, would an app like Forklift be a solution?


Of course, it shouldn't be necessary to buy a Finder alternative to avoid a Finder bug, but if I were encountering problems which reduced my productivity I might spend $30 (for Forklift) if that solves it. (By the way, I am still on Mojave)

Jul 6, 2020 2:21 PM in response to stoobloo

I got myself fed up with this issue - I use a Synology NAS.

Restarting the Finder works but you loose all your Finder window with tabs, bummer when you just get prepared to make a file copy.


Other that the Finder restart, I didn't find any workaround that worked for me, except one involving autofs - which comes with macOS.


I decide to write down the few steps that got me working here:

hhttps://gist.github.com/bitonio/b1248a4aa1e137bae7d857effeaddcda


Give it a shot if you've exhausted all other options.

NAS Access in Catalina issues

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