# Kibana won't start after deleting optimize folder **URL:** \ **Category:** Kibana\ **Created:** [November 15, 2019, 2:57pm UTC](https://discuss.elastic.co/t/kibana-wont-start-after-deleting-optimize-folder/208094 "2019-11-15T14:57:11Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![haythem](https://avatars.discourse-cdn.com/v4/letter/h/45deac/32.png) [@haythem](https://discuss.elastic.co/u/haythem)\ **Post date:** [November 15, 2019, 2:57pm UTC](https://discuss.elastic.co/t/kibana-wont-start-after-deleting-optimize-folder/208094/1 "2019-11-15T14:57:12Z")
Hello guys , so i've been working on a project and i had to change the kibana logo in login page , so i changed it and i moved the optimize folder(so i can go back where i was if something went wrong) and restarted kibana but it won't work !! i even moved back the optimize folder and still kibana won't work !! any idea what am i doing wrong ? Im using kibana 7.4.0 on linux red hat thanks ---
**Author:** ![Marius\_Dragomir](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marius_dragomir/32/42087_2.png) [@Marius\_Dragomir](https://discuss.elastic.co/u/Marius_Dragomir)\ **Post date:** [November 18, 2019, 8:58pm UTC](https://discuss.elastic.co/t/kibana-wont-start-after-deleting-optimize-folder/208094/2 "2019-11-18T20:58:31Z")
After removing the optimize folder kibana will need some time to rebuild the browser cache, but it should work afterwards. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [December 16, 2019, 8:58pm UTC](https://discuss.elastic.co/t/kibana-wont-start-after-deleting-optimize-folder/208094/3 "2019-12-16T20:58:35Z")
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