Put me down as +1 this problem. (Actually +2 as the problem is actually exactly the same after my wife upgraded to BigSur). Previously, I was able to easily access my large volume ReadyNAS (v6.10.4) shares via SMB until the BigSur upgrade. I am desperate for a fix.
One forum indicated that SMB3 - Required needed to be set on the ReadyNAS system. That has been verified.
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Global ReadyNAS setting are:
- (Checked) Enable SMB
- (Checked) Legacy Windows Discovery
- (Checked) Enhance MacOS
Workgroup: VOLUME
SMB3 Transport Encryption:
( ) Configure per share
(SELECTED) Configured globally [REQUIRED] (versus Enabled, Disabled, Desired)
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Also (I just discovered) that TimeMachine to the ReadyNAS backup has not worked since December 4th. That may or may not be the day that I upgraded to BigSur... Not sure.
Any and all help is respectfully appreciated.