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Synology DSM Update Version 7.4.1-90080

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Update Summary

DSM 7.4.1-90080 updates KMIP client authentication to require private CA certificates and includes USB UPS and USB device fixes after DSM 7.4. SnapshotReplication may be auto-updated or require a compatible manual update.

Update Details

Security

  • KMIP client authentication now requires certificates issued by a private CA; Synology default certificates, QuickConnect certificates, and public CA certificates are not supported.

Bug Fixes

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

New Features

  • Enhanced KMIP certificate handling to comply with updated certificate issuance policies for public certificate authorities.

Hints

  • After installing this update, downgrading to a previous DSM version is not possible.
  • This update will restart the Synology NAS.
  • If auto update does not run, perform a manual update in Control Panel and complete the required pre-update actions.
  • The update is released in a staged rollout.
  • To ensure compatibility, SnapshotReplication will be automatically updated or may require a manual update to a compatible version.
  • Some models will not receive this update on the device and must download the upgrade patch from Synology Download Center.
Product Information

Vendor: Synology

Product: DSM

Product type: Other

Application category: Utilities

Platform: Linux

Version: 7.4.1-90080

Vendor release date: Jul 23, 2026

Published on updatealert.io: Jul 23, 2026

Description: Operating system and management software for Synology NAS devices.

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