# Mach 4 wont run properly after Microsoft update

**URL:** <https://forum.avidcnc.com/t/mach-4-wont-run-properly-after-microsoft-update/6075>\
**Category:** General Chat\
**Tags:** mach4\
**Created:** [April 28, 2026, 6:38pm UTC](https://forum.avidcnc.com/t/mach-4-wont-run-properly-after-microsoft-update/6075 "2026-04-28T18:38:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![chick533](https://avatars.discourse-cdn.com/v4/letter/c/db5fbb/32.png) [@chick533](https://forum.avidcnc.com/u/chick533)\
**Post date:** [April 28, 2026, 6:38pm UTC](https://forum.avidcnc.com/t/mach-4-wont-run-properly-after-microsoft-update/6075/1 "2026-04-28T18:38:01Z")

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Recently update laptop to Microsoft 11. Now when I try to run a project, half way thru shuts down and get a message that says" demo has time out" . Any suggestions on how to correct this issue? didn’t do anything to Mach 4 that I’m aware off.

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**Author:** ![PaulC](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@PaulC](https://forum.avidcnc.com/u/PaulC)\
**Post date:** [April 28, 2026, 6:40pm UTC](https://forum.avidcnc.com/t/mach-4-wont-run-properly-after-microsoft-update/6075/2 "2026-04-28T18:40:27Z")

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Sounds like a license issue.

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**Author:** ![jjneeb](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/jjneeb/32/244_2.png) [@jjneeb](https://forum.avidcnc.com/u/jjneeb)\
**Post date:** [April 28, 2026, 10:30pm UTC](https://forum.avidcnc.com/t/mach-4-wont-run-properly-after-microsoft-update/6075/3 "2026-04-28T22:30:16Z")

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I would assume that somehow the license got uninstalled or removed by that message. Does it say demo on the upper left are of the Mach4 window? If so, just re-install the license.