Plex Media Server Version 0.9.17.0

Mobile sync had been unreliable in earlier versions, often failing silently. Version 0.9.17.0 introduced a new sync engine with:

If you are still running 0.9.17.0 today:

Many older NAS devices (e.g., early Synology DS2xx series, QNAP TS-x12, or Thecus N2560) cannot run Plex versions beyond 0.9.17.x due to discontinued support for their Linux kernels or glibc versions. For owners of such hardware trapped on an older OS, version 0.9.17.0 is the last stable, feature-complete release that works. plex media server version 0.9.17.0

While video took center stage, 0.9.17.0 also brought significant quality-of-life improvements for audiophiles.

This version refined the Plex Music experience. It introduced better handling of multi-disc albums and improved the accuracy of the sonic analysis engine (used for the "Sonic Adventure" feature and loudness leveling). For users running large music libraries, the metadata agent updates in this version fixed long-standing issues regarding artist art and album sorting, moving Plex closer to being a viable competitor to dedicated music servers like Roon or LMS. Mobile sync had been unreliable in earlier versions,

If there is one technical reason version 0.9.17.0 matters, it is the formalization of support for H.265 (HEVC).

In 2016, the media landscape was shifting. Storage costs were dropping, but high-resolution content (1080p and emerging 4K rips) was consuming massive amounts of space. H.265 offered the promise of identical quality at half the bitrate of the standard H.264. Many older NAS devices (e

Before 0.9.17.0, HEVC support in Plex was spotty. It often resulted in the dreaded "This server is not powerful enough to convert video" error, as the server struggled to transcode the complex new codec for devices that couldn't play it natively.

Version 0.9.17.0 introduced robust, native support for HEVC across compatible platforms. This meant:

This update was the green light for Plex power users to begin migrating their libraries from x264 to x265, a trend that defines media management today.