Taptic engine gets stuck

I am experiencing the same issue. The Watch seems to stop providing haptic feedback after periods of inactivity. This didn't happen prior to the Watch OS 1.0.1 update. The quickest way I have found to get it working again is to go into the Sounds & Haptics settings on the Watch and adjust the strength of the haptics and it will start working again. However, it will eventually stop working again and I won't realize it until I look at my Watch and realize I have missed notifications.

I experienced this issue with Watch OS 1.0. After some time of using the watch (activity + inactivity) haptic feedback stopped working. After turning off and on worked again and after some time stopped. Every time restart was enough to help. After upgrading to 1.0.1 problem hasn't occured yet. So it seemed like a definite software not hardware error.

For me, it didn't occur until I updated to 1.0.1. I am inclined to agree that it is software-related, however, if it was happening for you on 1.0 and not so far on 1.0.1, then it doesn't seem to be an issue with the update itself. I just got done with a less than stellar chat session with AppleCare in which their solution was to "reset the watch" by holding the digital crown and the side button until the watch restarts. I had previously tried restarting the watch by holding the side button and then sliding to power off. The AppleCare rep claims that doesn't do the same thing as the reset they told me to do. So far haptics are working, I am skeptical but we will see if their solution has worked.

I'm having the same problem. After a while, the taptic engine stops working. You have to change the "Haptic Strength" setting up a down a bunch of times, and if that doesn't work then change the "Alert Volume" up and down a few times, then it will always start working again. But then, after a few hours, it stops working and you have to do this again to get it to turn back on. Apple support had me wipe out the entire watch and do the sync again, but I'm having the same problem even with 1.01

I discovered those exact troubleshooting steps as well which led to the realization that it had to be a hardware issue. I got in touch with AppleCare and had the watch replaced.

Apple submitted the replacement request last Wednesday and I had my replacement watch Thursday afternoon. I have AppleCare+ so I opted to go with the Express Replacement where they send me the replacement watch before I send the original back since I couldn't live without the watch either.

I'm having the same issue, what I have noticed is that if you use siri and say "timer 3 seconds" or use the alarm feature and the sounds and Haptic goes off you can feel the Haptic taping starts very lightly and starts building up little by little till it's full blast and it's pretty strong, I have the Prominent Haptic on so I get an extra tap, but my point is this is what's wrong with the Haptic tap feedback it needs to stay on, one tap is not going to turn it on, if Apple can fix this with the next update it would be cool if the taptic stays on so the feedback get's felt full strength by the 3-5 taps.

Yes I bought another watch same kind $999 Stainless Steel and it work's awesome!!! 100% good Haptic feedback and very strong! So I called Apple and told them that I had to buy another watch to see if it had the same problem and i told them that the new watch works 100% the way it supposed to work and they told me to return the first watch for a full refund so i'm very happy with my new watch, had for about 3 weeks now and works 100% awesome!!! Thanks Apple for helping me out with this issue.

Same problem, i had to reset my watch to get working again for a time, this seems to happens approximately once a month, is really annoying. I hope to be a software bug, Apple should release a update to solve this