# Launch client jar signature is invalid

**URL:** <https://forum.inductiveautomation.com/t/launch-client-jar-signature-is-invalid/110979>\
**Category:** Ignition\
**Tags:** designer\
**Created:** [September 25, 2025, 5:15pm UTC](https://forum.inductiveautomation.com/t/launch-client-jar-signature-is-invalid/110979 "2025-09-25T17:15:17Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![cdunn.home](https://avatars.discourse-cdn.com/v4/letter/c/45deac/32.png) [@cdunn.home](https://forum.inductiveautomation.com/u/cdunn.home)\
**Post date:** [October 16, 2025, 11:54am UTC](https://forum.inductiveautomation.com/t/launch-client-jar-signature-is-invalid/110979/6 "2025-10-16T11:54:11Z")

</div>

> [@Launch client jar invalid](https://forum.inductiveautomation.com/t/launch-client-jar-invalid/109145/7):
>
> closing the Designer Launcher

This is a small, but critical step!

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_[View the full topic](https://forum.inductiveautomation.com/t/launch-client-jar-signature-is-invalid/110979)._