Mounting smb shares after upgrade to Catalina not working

Very helpful! Thank you! I also have a couple of WDSHARESPACE NAS devices. I went into each NAS device and saw that AFP was enabled. Then I went to 'Go', from the MacOS Finder menu bar, selected 'Connect to Server', and entered in the string that you listed in your reply below. I entered the username and password, and it worked perfectly!

The link at the bottom was also a good overview of AFP, SMB, etc. that provide some simple explanation.

afp://username@<NAS ip address>/sharefoldername

https://support.apple.com/en-us/HT204445

Workaround to login on your NAS storage.

1. Open Finder
2. Click "Go" in the menu
3. Click: "Connect to Server"
4. Type: cifs://192.168.123.22 (the IP adres of your NAS storage (My equipment = Synology CS407 with firmware DSM 3.1-639)
5. Enter your Username and Password
6. Select the Volumename and your Shared drive will be available in Finder and as Drive-icon on the desktop

In my case the NAS only support CIFS/SMB1, that is still supported by Catalina, but you cannot connect with a script because you get an authentication (Password) error.

The difference is that Catalina tries to login with encrypted credentials with the SMB2 or 3 protocol.

I tried two tools (Tweaking4All) " ConnectMeNow.App" and (App Store - not available anymore) "DriveMounter.App", both are not usable anymore.

I have a Synology NAS and was able to partially restore connectivity by changing setting in the file services control panel on the NAS. For me it was under advanced settings on the SMB/AFP/NFS tab. I changed Maximum SMB protocol to SMB3 then changed Minimum SMB protocol to SMB2 with large MTU. I still can't connect from the sidebar in the finder but I can connect by using Go>Connect to Server. I also have to specify my login credentials using OSX's full name for me, it does not work using my account name. Other NAS boxes may have similar settings. Good Luck!

All -FWIW -

Apple support had me log my iMac's activity when it tried to connect via SMB to my NAS device. They then investigated the logs.

This week they told me that my NAS device's SMB implementation didn't support some fix to a security flaw reported by Microsoft. I find this explanation interesting since I have a Windows 10 PC with the latest (1903) Microsoft major update installed. And the Windows PC can access the same USB-attached storage on the same NAS device that Apple tells me doesn't support this security fix. It seems odd that Microsoft haven't implemented the fix to the flaw that they have reported and Apple have.

For me personally this issue is now academic since I've moved my USB-attached storage to a Raspberry Pi 4 device, which works perfectly with the iMac and Catalina. But for others, they may want to check with their NAS suppliers about this fix.

I have the same issue. The original smb share that appears in Mojave Finder also appears in Catalina Finder but is inaccessible in Catalina. I've since used command-k to access the IP address of the smn share and that works, which is good enough for me. Now. How do I get the initial smb share that still appears (from Mojave)... to go away?

not really, i am using synology and ban the smb 1.0 in file sharing. it does not work and i try to open the netbios as i searched online. not work. the only i find helpful is to select the 'Go' in Finder and connect as afp://yourserver it works well.

and waiting for the upgrade from apple.

I have had the same issue. No one of the suggested solutions works for me. Very strange but when i tried with muCommander i could login and see the files. Why the Finder could not do the same thing is a question for Apple.

smb_neg has been obsolete since Sierra. It is replaced by protocol_vers_map, which according to the man pages defaults to 7, which supports versions 1/2/3. I could try setting this to 1, for version 1 only. I would then expect my access to the Windows 10 PC shares to fail. I'll test this.

Similar issue with my MBPro connecting to a USB drive that was connected to an iMac on my local network. Enabled AFP which solved the problem. But there was not a problem with using SMB before Catalina.

Instead of connecting to

smb://<addressofserver>

use

cifs://<addressofserver>

where <addressofserver> is your server's IP address or DNS name

That worked for me to connect to an old Synology CS-406e

Can’t consistently resolve. But with AFP and SMP enabled, I turned off sharing, rebooted and then turned sharing on again and have been able to connect. But rebooting for me also changed access for me, so that’s problem number two. Submitting bugs to Apple later this morning.

This may be helpful for someone who has been unable to connect to a network drive using SMB. I found a very simple solution.

I have a local network that includes a Mac mini server with an attached USB drive, and after upgrading to MacOS Catalina I was unable to mount the drive from any computer on the network.

I found many posts on various forums that reported the problem but none of the suggested "solutions" solved the problem for me. (And on one forum I was even chastised for reporting the ineffectiveness of two suggested solutions.)

Here's how I solved the problem:

On the Mac mini server I displayed the Info window for the attached USB drive and selected "Shared folder".

Now I'm able to access the drive from my other computers on the network.

This may help some people, but perhaps not everyone. If you were mounting a network volume somewhere in the root directory, this will fail in Catalina. There is a workaround as described in this thread: Java app needs root access - Apple Community

You need mount the network volume somewhere in the data volume /System/Volumes/Data and then use the synthetic.conf file to map root link to that mount point.