# Access denied during Katalon Studio installation

**URL:** <https://forum.katalon.com/t/access-denied-during-katalon-studio-installation/188145>\
**Category:** Web Testing\
**Tags:** installation, katalon-studio\
**Created:** [February 10, 2026, 1:42pm UTC](https://forum.katalon.com/t/access-denied-during-katalon-studio-installation/188145 "2026-02-10T13:42:46Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [February 10, 2026, 10:24pm UTC](https://forum.katalon.com/t/access-denied-during-katalon-studio-installation/188145/4 "2026-02-10T22:24:32Z")

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Yes, the same issue was reported for the ver9 in Nov 2024. But I think it is not sad much. You have something you can try. Please find @bhavyansh.ameta suggested a solution in his [post](https://forum.katalon.com/t/unable-to-install-katalon-ver-9-and-higher-throws-os-error-5-on-windows/157206/5).

I found that @alopez.softland posted a similar issue at [March 2025](https://forum.katalon.com/t/the-katalon-studio-installation-is-not-progressing/124515) as well. I think your machine environment has some condition that causes KS installer to fail. You should read the [official doc](https://docs.katalon.com/katalon-studio/get-started/install-katalon-studio) again, and review your machine environment.

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