Today (6 Nov 2025) my Windows 10 laptop applied a Windows Update (KB5066791). After this, Lightburn is having tracking issues with both my Sculpfun iCube 3w and my Comgrow Z1 5w lasers.
I’m still able to communicate with them and even get the lasers to respond to commands. However, they both get an alarm and try to run off their track when I try to frame a job.
In the console for the Z1 it reads: ALARM: 1 Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended On or near line 1:
In the console for the iCube 3w, it reads: ALARM: 3 Reset while in motion. Grbl cannot guarantee position. Lost steps are likely. Re-homing is highly recommended. On or near line 1:
I am running Lightburn Pro 2.0.04.
The Z1 console shows VER: 2.3.0.2.20230830:#I
OPT: VZL, 15, 128
The iCube console shows: VER:1, 1h.2023110301:
OPT:V,15,1281
I’m guessing this is not going to be a version issue for either laser, since they worked fine yesterday. Since both have this same problem, I’m guessing it’s a Windows communication problem after the update.
Good evening soniclab. I did make the attempt at this, but the update refuses to uninstall. I knew that once the Windows 10 support was gone I was on borrowed time. I had not expected that they would push something to it after the cutoff date. I just figured I was going to have to worry about security issues, not Microsoft bricking the laptop. Thanks for taking the time to make the suggestion!
UPDATE: I attached another laptop to the Z1 Comgro laser and it still works fine. So I think I may just be out of luck with the original one. Since it can’t be upgraded to Windows 11, I am thinking it’s likely not worth the time to build it back up from a factory reset. Thank you for all of your help!