# What is config-bak in the files

**URL:** <https://forums.maslowcnc.com/t/what-is-config-bak-in-the-files/25286>\
**Category:** Troubleshooting\
**Created:** [December 9, 2025, 8:52pm UTC](https://forums.maslowcnc.com/t/what-is-config-bak-in-the-files/25286 "2025-12-09T20:52:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Caleb\_Yager](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/caleb_yager/32/25070_2.png) [@Caleb\_Yager](https://forums.maslowcnc.com/u/Caleb_Yager)\
**Post date:** [December 9, 2025, 8:52pm UTC](https://forums.maslowcnc.com/t/what-is-config-bak-in-the-files/25286/1 "2025-12-09T20:52:41Z")

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is it a new file in the new firmware? do i need to do anything with it?

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<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [December 9, 2025, 9:08pm UTC](https://forums.maslowcnc.com/t/what-is-config-bak-in-the-files/25286/2 "2025-12-09T21:08:46Z")

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It looks like it’s a backup that is automatically generated by FluidNC, it should be safe to ignore