# Can't update to 26.09 - install failed to run - traceback error

**URL:** <https://forums.ankiweb.net/t/cant-update-to-26-09-install-failed-to-run-traceback-error/71029>\
**Category:** Help\
**Created:** [September 14, 2026, 7:29pm UTC](https://forums.ankiweb.net/t/cant-update-to-26-09-install-failed-to-run-traceback-error/71029 "2026-09-14T19:29:14Z")\
**Posts on this page:** 1\
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**Author:** ![Danika\_Dakika](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/danika_dakika/32/17815_2.png) [@Danika\_Dakika](https://forums.ankiweb.net/u/Danika_Dakika)\
**Post date:** [September 23, 2026, 4:15pm UTC](https://forums.ankiweb.net/t/cant-update-to-26-09-install-failed-to-run-traceback-error/71029/71 "2026-09-23T16:15:09Z")

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> [@Anki 26.09.3 Release](https://forums.ankiweb.net/t/anki-26-09-3-release/71188):
>
> This patch fixes an issue where upgrading on Windows didn’t fully replace the previous version, which could cause Anki to crash on startup ([#5037](https://github.com/ankitects/anki/issues/5037)). It also fixes a “Card modified” error in Card Info ([#5635](https://github.com/ankitects/anki/issues/5635)), makes safe mode more reliable ([#5629](https://github.com/ankitects/anki/issues/5629)), and stops the “Please restart” message from repeating in Preferences ([#5639](https://github.com/ankitects/anki/issues/5639),[#5640](https://github.com/ankitects/anki/issues/5640)). If you’re on a version older than 26.09, please upgrade as soon as possible — 26.09 includes important security fixes. Full changelog: [Release 26.09.3 · ankitects/ank…](https://github.com/ankitects/anki/releases/tag/26.09.3)

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