# The ESS did not respond to the wakeup message

**URL:** <https://forum.avidcnc.com/t/the-ess-did-not-respond-to-the-wakeup-message/5378>\
**Category:** General Chat\
**Created:** [October 19, 2025, 9:08pm UTC](https://forum.avidcnc.com/t/the-ess-did-not-respond-to-the-wakeup-message/5378 "2025-10-19T21:08:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Tonyk](https://avatars.discourse-cdn.com/v4/letter/t/4491bb/32.png) [@Tonyk](https://forum.avidcnc.com/u/Tonyk)\
**Post date:** [October 19, 2025, 9:08pm UTC](https://forum.avidcnc.com/t/the-ess-did-not-respond-to-the-wakeup-message/5378/1 "2025-10-19T21:08:39Z")

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I have a Avid 48 x 72 pro, It worked fine a few months ago, turned it on today & got this message “the ESS did not respond to the wakeup message. turned on & off comp., looked at all connections, looked at controller box, correct lights on, 2 short blinks followed by longer pause on green LED ethernet plug. Config jumper in place so “Wakeup” is configured.

Have windows 10 with no tie to internet  
So, what is my next steps???

Thanks

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**Author:** ![Eric](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/eric/32/3220_2.png) [@Eric](https://forum.avidcnc.com/u/Eric)\
**Post date:** [October 20, 2025, 10:08am UTC](https://forum.avidcnc.com/t/the-ess-did-not-respond-to-the-wakeup-message/5378/2 "2025-10-20T10:08:11Z")

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> **[Mach4 CRP800 Controller - Troubleshooting](https://www.avidcnc.com/support/troubleshooting/mach4ControlsProCnc/mach4Crp800Controller/#ess-fails-to-connect)**

Check this page and run through the steps there.

It’s likely you need to run the SCU again.