After upgrade or new install of Big Sur, TM backup stoped working to Synology NAS using AFP or SMB3 protocol. TM to external USB works fire and other 4 mac's with Catalina can create TM backups to the same NAS without a problem.
MacBook Pro 13″, macOS 11.0
i was able to solve the problem after update Cisco AMP. With Big Sur and Cisco AMP Version 1.14.0 the TM backup doesn't work. After upgrading to Cisco AMP Version 1.14.1 every works fine.
another MBP with Catalina has no Problem with TM and Cisco AMP Version 1.14.0. The Backup is terminated on the same Synology.
Thanks everyone for solve the problem
I am having the same issue. I don't have Sophos installed and never have, but I do have AVG (Free) running. Will this be causing the issue? I have tried the workarounds abiove (users/directories etc) but still fails every time.
Thank you OR8cle! Finally that's the solution. I saw the TimeMachine account logging into DSM two times in a short time when the backup was started, or when the TimeMachine was searching for a backup-disk. I have no antivirus/malware software installed, so that could not be the problem. Apparently the macOS keychain was corrupted in some way.
I have tried on two different Synology NASes and the same result. I have macbook pro 13 early 2015.
Regards,
Alex
Yes that is the way and it doesn't work. It starts the backup, but it is very slow and after some time (5 min) stopes the backup without any real error.
Regards,
Alex
I have checked this and I already have this configured as you suggested. It didn't help in my case.
I don't use Sophos. I have tried without spotlight and it's the same result.
I don't know what to do to troubleshoot on both sides. Any ideas?
I have opened the ticket at Cisco and they answered, they know the issue and they are working on it. Next release will probably correct the issue.
Push vendor to give you answer, when they will correct their AV client.
No on Sophos. Yes in Norton. Will try removing. Thank you.
Another poster sent me this link earlier:
https://discussions.apple.com/docs/DOC-8841
Especially with Big Sur that has built-in anti-virus, there's no need for third party software at all.
So, no exploits against macOS?
True or false?
Good to know. I've written them to confirm that Bitdefender has been certified on macOS Big Sur before I shell out any $$.
Hi,
I am all set by exactly following https://9to5mac.com/2020/08/20/how-to-easily-back-up-your-mac-with-time-machine-and-a-synology-nas-video/. :-)
regards
Roland
Yeah, not gonna happen. Switched to Bitdefender and everything is fine.
Cisco also updated Cisco AMP SW and now it works fine.
TimeMachine Big Sur to Synology NAS
