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Synology DSM 7.4.1-90080 – safe to update?

Newer release in this line: Synology DSM 7.4.1-90080 Update 1 (2026-10-12). If you're updating now, check that one instead — it may already fix the issues reported here.

What's in this release

CVEs fixed

No CVEs mapped to this release.

Community reports

• Problem New users auto granted SMB protocol access despite not being configured anywhere (looks to be backed-in into User group but not according to GUI...) DSM 7.4.1-90080 · Reddit · 2026-09-17

  Hi All, I am creating a new user, by default it is a member of built-in "users" group. Users group does not have SMB enabled for its members yet user has SMB access shown as granted by a Group Membership so I have to explicitly deny it, which is just plain wrong! It looks like u…

• Problem Emby Issues After DSM 7.4.1 · Reddit · 2026-08-30

  I upgraded my DS1821+ from 7.3.x to 7.4.1 yesterday and after that I can no longer access my Emby Server remotely. There are no issues with accessing Emby on my internal network but even with port forwarding on my router I can't get a response from the external IP. I have tried:…

• Fine Constant indexing issue gone since updating · Reddit · 2026-09-30

  After updating a few updates ago, my NAS had been indexing files nearly constantly. It was always grinding away even though I save very few files to it on a daily basis. But since updating to 7.4.1-90080, it's been very quiet. The constant indexing issue seems to have been corre…

• Mention OWC memory and Synology DS 925+ · Reddit · 2026-10-11

  I have a DS 925+ running DSM 7.4.1-90080. I decided to upgrade my RAM and bought two 16 GB OWC memory pairs from Amazon, advertised as compatible with DS 925+, OWC2C6D42R816GB. I installed them, and the system recognized them right away without any errors. However, after two mon…

• Mention Surveillance Station update: Reolink person/vehicle detection no longer shows up in push notifications (DS cam) · Reddit · 2026-10-08

  Hi everyone, Since the latest Surveillance Station update, I've had a problem and I'm out of ideas. Setup: - Synology DS220+ running DSM 7.4.1-90080 and Surveillance Station 9.3.0-12143 - Reolink cameras RLC-820A and Reolink Doorbell WiFi, added via ONVIF/RTSP/Reolink device pac…

• Mention DS725+ Full health check, then everything crashes · Reddit · 2026-10-07

  Question: NAS, HDD, RAM, DSM (Version: 7.4.1-90080), something else? Update: it seemed to be related to whole-disk encryption. Without that, the storage test passed in less than a day. Backups themselves will be encrypted anyway so this is fine. Maybe the encrypted volume would…

• Mention Download Station 4.1.2-5012 finishes torrents but doesn’t move completed files · Reddit · 2026-09-30

  I’m troubleshooting an issue where Download Station downloads torrents successfully, but recently completed downloads aren’t being exported to their configured destination. I’d like to find a permanent fix while preserving my existing seeding tasks. Setup - DS918+ - DSM 7.2.2-72…

• Mention Synology DS224+ hard reboots instantly when ESP uses AES-GCM (StrongSwan / XFRM) · Reddit · 2026-09-26

  Disclaimer: Yes, this post was AI-assisted for the technical parts (that will explains it if you think that the config/technical parts that I tried don't make sense haha) I'm a developer, but I'm not a DevOps/Docker expert and even less of a VPN/cryptography expert. This took lo…

• Mention DS118 Blue Power LED sometimes flashing but running OK · Reddit · 2026-09-25

  A couple of times recently I've noticed the power LED flashing. Unlike other posts the DS seems to have booted OK - e.g. SMB, media server and web interface all OK. Nothing seen in Notifications, Log Center, or S.M.A.R.T. history. The last change was the update to 7.4.1-90080

• Mention mDNS on Linux errors while pinging Synology · Reddit · 2026-09-21

  I have just rebuilt my Synology (920+) and installed DSM 7.4.1-90080 on it but found that any Debian Linux box (Bookworm / Trixie) trying to ping the NAS using mDNS (ie ping via the <server>.local name) suffers a segfault and reports the NAS as not found. avahi-daemon[35152]: se…

• Mention Dockers not communicating between themselves · Reddit · 2026-09-06

  I have had a succesful setup of Radarr, Sonarr and QBittorrent (all Linuxserver Docker images). However, "recently" (I can't be sure when), the "arrs" started to all complain that they couldn't connect to any Indexer or any download client (QB). All of the Containers are showing…

• Mention DS418 not getting ip from DHCP, but static doesn't stay either! · Reddit · 2026-09-02

  Hi everyone 😊 I have 2 Synology NAS devices; DS224+ and DS418. Each has 2 ethernet cables, and are both on the same vlan. For each, I have a DHCP reservation for port 1, and the other port is just assigned from the general DHCP pool. (10.1.1.100-199) On the DS224+ this works ju…

Reports are found automatically and labelled by an AI model plus keyword rules — they can be wrong. Open the post to judge for yourself.

← Synology DSM 7.4-90075 · Synology DSM 7.4.1-90080 Update 1 →

Other Synology DSM versions

• 7.4.1-90080 Update 1 2026-10-12
• 7.3.2-86009 Update 5 2026-10-12
• 7.2.2-72806 Update 10 2026-10-12
• 7.2.1-69057 Update 13 2026-10-12
• 7.4.1-90080 2026-07-23
• 7.3.2-86009 Update 4 2026-06-30
• 7.2.2-72806 Update 9 2026-06-30
• 7.2.1-69057 Update 12 2026-06-30