# Thumbnails not generated automatically during library scan

**URL:** <https://forums.plex.tv/t/thumbnails-not-generated-automatically-during-library-scan/883663>\
**Category:** Plex Media Server\
**Tags:** server-windows\
**Created:** [July 27, 2024, 12:42pm UTC](https://forums.plex.tv/t/thumbnails-not-generated-automatically-during-library-scan/883663 "2024-07-27T12:42:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![the\_plex](https://avatars.discourse-cdn.com/v4/letter/t/ac8455/32.png) [@the\_plex](https://forums.plex.tv/u/the_plex)\
**Post date:** [July 27, 2024, 12:42pm UTC](https://forums.plex.tv/t/thumbnails-not-generated-automatically-during-library-scan/883663/1 "2024-07-27T12:42:53Z")

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Server Version#: 1.40.4.8679 x64 on Windows Server 2022  
Player Version#: N/A  
thumbnails not generated automatically during library scan. I already set thumbnails to be generated immediately when media is added and scanned in library.  
This behavior start after I update to this version.

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**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\
**Post date:** [July 27, 2024, 12:49pm UTC](https://forums.plex.tv/t/thumbnails-not-generated-automatically-during-library-scan/883663/2 "2024-07-27T12:49:11Z")

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> [@Did something break/change with video preview thumbnails recently?](https://forums.plex.tv/t/did-something-break-change-with-video-preview-thumbnails-recently/881141/1):
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> Server Version#: 1.40.4.8626 Player Version#: 10.17.0.868 (Android TV) I’ve been reporting a bug with preview thumbnails for almost a year ([Bug: Video Preview Thumbnails do not index correctly for multi-part movies](https://forums.plex.tv/t/bug-video-preview-thumbnails-do-not-index-correctly-for-multi-part-movies/848320)) and something else seems to have broken recently. I have 4 or 5 libraries where preview thumbnails are enabled. The behavior used to be that scanning in new media would add titles, detect intros, detect credits, generate chapter thumbnails, and generate playback thumbnails. Now, …

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**Author:** ![OttoKerner](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/ottokerner/32/10079_2.png) [@OttoKerner](https://forums.plex.tv/u/OttoKerner)\
**Post date:** [July 27, 2024, 12:49pm UTC](https://forums.plex.tv/t/thumbnails-not-generated-automatically-during-library-scan/883663/3 "2024-07-27T12:49:13Z")

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