DSM Update Version: 7.4.1-90080

[Rusty]

Version:​

---

(2026-07-23)

Important Note​

1. After installing this update, you will not be able to downgrade to a previous DSM version.
2. This update will restart your Synology NAS.
3. If auto update does not run, perform a manual update in Control Panel. Before updating, follow the instructions and complete the required actions to ensure success.
4. To uphold our commitment to quality, every DSM release undergoes rigorous validation. To ensure optimal stability, the models listed below will not receive this update on your device and will remain on their most suitable version. You can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.
   • FS Series: FS3017, FS2017, FS1018
   • XS Series: RS18016xs+, RS4017xs+, RS3617xs+, RS3617xs, RS3617RPxs, RS18017xs+, DS3617xs, DS3617xsII, DS3018xs
   • Plus Series: RS2416RP+, RS2416+, DS916+, DS716+II, DS716+, DS216+II, DS216+, DS1817+, DS1517+, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+, DS1618+, DS918+, DS718+, DS218+, RS1219+
   • Value Series: DS116, DS216, DS216play, DS416, DS416play, DS1517, DS1817, DS418play, RS217, RS816
   • J Series: DS216j, DS416j, DS416slim, DS419slim, DS418j, DS218j, DS119j
5. Enhanced KMIP certificate handling to comply with updated certificate issuance policies for public certificate authorities (CAs). KMIP client authentication now requires certificates issued by a private CA. Synology default certificates, the QuickConnect certificate, and certificates issued by public CAs (e.g., Let's Encrypt, SSL.com, and Sectigo) are not supported for KMIP client authentication. For detailed configuration instructions, refer to this article.

Compatibility & Installation​

1. To ensure compatibility, the following packages will be automatically updated or will require a manual update to a compatible version: SnapshotReplication.

Fixed Issues​

1. Fixed an issue where a USB UPS could not be recognized after updating to DSM 7.4.
2. Fixed an issue where USB devices could not be used on certain models after updating to DSM 7.4.

Notes:

• This version is released in a staged rollout.

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[tekguru]

Interesting on my 918+ I just checked and was told I was up to date on DSM with version 7.3.2-86009 update 4.

 

[Telos]

I just checked and was told I was up to date on DSM with version 7.3.2-86009 update 4.

You can only download the upgrade patch from Synology Download Center because you won't receive notifications for this update on your DSM.

 

[tekguru]

Ah ha thanks, I'll wait until it eventually prompts me to update.

 

[oRBIT]

Nice that they fix issues obviously but I sure miss those days when DSM updates were exciting with cool new features.

 

[Rusty]

p

Ah ha thanks, I'll wait until it eventually prompts me to update.

It won’t if your model is on the “will not receive this update”

 

[Jan Janowski]

I asked support, was told 7.3 was being updated for 1-2 years. 7.3.2-4 update was confirmation of that! Regarding 7.0, I waited till 7.1.1, so…..
But I do agree with oRBIT.

Current plan: though all NAS here can (manually) go to 7.4,
Staying at 7.3, awaiting something new in 7.4 ‘I can use’…..
if 7.3 “times out” under support: 7.4.x is waiting! Win-Win??

 

[DSfuchs]

Heads up: My RS3621xs+ won't start up after the update to DSM 7.4.1!

 

[Telos]

I'll wait until it eventually prompts me to update.

It will be a long wait, as this will not happen. See again, the release notes.

 

[SantucciOhio]

Interesting on my 918+ I just checked and was told I was up to date on DSM with version 7.3.2-86009 update 4.

Yeah, I also have a DS918+ and I see it’s listed under #4 above as one of the servers you won’t receive an update notice about DSM 7.4.

 

[Rusty]

Several machines updated, no issues at all (virtual and physical with Syno drives so far).

VDSM
723+
224+
425+

 

[tekguru]

Yeah, I also have a DS918+ and I see it’s listed under #4 above as one of the servers you won’t receive an update notice about DSM 7.4.

Yep, I missed that the first time around!