Solved SMB share disconnects

[DeltaGolf]

On a Mac I'm connecting to my shared folders in the usual command-K way. I get the list of folders and access one. It mounts and - as usual - the server appears in my Finder window under 'Locations'. Then I remember I need to access that other folder so, as I'm already connected, I click on the SynoNAS in Locations. I'm expecting to see the list of folders on the NAS, just like when I connect to any other Mac running SMB shares.

But no, I get 'not connected', despite there already being a shared folder mounted on my Desktop. OK, let's click 'Connect As...' and the server disappears from the Locations list along with the mounted share.

This doesn't happen when I connect to a Mac SMB...

There must be a setting I'm missing?

 

[Rusty]

usual command-K way

Using what protocol exactly?

 

[fredbert]

Mac Catalina has had (still has) issues with SMB connections. AFP still works.

You can try adjusting the SMB advanced settings in DSM Control Panel -> File Services. I have min SMB v2 and max SMB v3, and auto encryption.

 

[DeltaGolf]

Using what protocol exactly?

SMB, the command-K shortcut brings up the 'Connect To Server' dialog, from there I'm asking for either smb://MySynoNAS or smb://192.168.1.2

Mac Catalina has had (still has) issues with SMB connections. AFP still works.

I hadn't noticed to be honest. Happily connecting a Catalina Mac to another Mac acting as a SMB server. Solid as a rock. I'm sure there was a reason for not using AFP. Apple have given up on it for sure. I haven't used it in years.

You can try adjusting the SMB advanced settings in DSM Control Panel -> File Services. I have min SMB v2 and max SMB v3, and auto encryption.

I have that other than the encryption which I switched off in the vain hope to speed up some large transfers.

There are lots of 'advanced' SMB settings which I mostly don't understand. Though there might be something there.

It may just be Catalina then as it seems to 'forget' it has a connection.

 

[fredbert]

AFP may have been sidelined by Apple in favour of SMB but connecting the the NAS it is still quickest (or the same as SMB when it's playing well).

Also ... Turn off packet signing for SMB 2 and SMB 3 connections

 

[DeltaGolf]

Also ... Turn off packet signing for SMB 2 and SMB 3 connections

"In macOS 10.13.4 and later, packet signing is off by default."

So that was easy on a macOS 10.15.5 Mac!

 

[fredbert]

OK, so didn't read it since first applying and then doing for new Macs/installs. Force of habit

 

[DeltaGolf]

AFP still works.

OK lets give up on SMB for the minute. Its now off and AFP is on.

And guess what. I get the exact same result. Read my original post, substitute "SMB" for "AFP".

 

[DeltaGolf]

Another wee update. Switched SMB back on. Went to another Mac. Other Mac is running 10.13.6. File sharing via SMB works perfectly as expected.

So its a Catalina 10.15.5 problem?

Mac users, what are you running?

 

[Rusty]

Mac users, what are you running?

Catallina with AFP since forever. 0 problems

 

[DeltaGolf]

"Hello, IT, have you tried turning it off and on again?"

Restarted the Mac. I'll mark this as solved then....

 

[fredbert]

It may have been just a Finder quirk. You can restart Finder without rebooting the Mac...

Apple menubar item -> Force Quit... -> select Finder​

Hoover over Finder icon in the Dock then either of...

Shift + Right Click​

Shift + Ctrl +Click​

Select Relaunch from the pop-up menu.​

If Finder doesn't look like it has restarted you can just click on its Dock icon.