Apple Watch can't always reconnect

Developer Tools & Services Xcode Xcode watchOS Apple Watch

Created May ’24

Replies 30

Boosts 8

Views 5.4k

Participants 27

Using Xcode to build and deploy the app to my watch, this is what I get:

“Waiting to reconnect to Apple Watch. Previous preparation error: Transport error." And then “Connecting to Apple Watch. Xcode will continue when the operation completes.” And these messages continue to switch between each other.

Sometimes the watch to connect and the application starts, but more often a scenario occurs with endless reconnection.

I'm using: MacOS 14.4.1 (MacBook Pro 2019; 1.4 GHz Quad-Core Intel Core i5), Xcode 15.3, Watch OS 10.2 (Apple Watch SE 1), iOS 17.1.1 (iPhone 15 Pro).

Methods I tried: Connecting Macbook, iPhone and Watch to the same WIfi network; Disabling Watch (and IPhone) from the "Devices and Simulators" menu and setting up Watch (and IPhone) from the beginning.

Any help?

rizhang OP

Jun ’25

Same issue... This is insane. How is anyone able to build an Apple Watch app? I've wasted hours trying to run a simple app from Xcode on my watch....

danthewalsh OP

Jun ’25

I also have been having this issue, and I feel like I’ve tried everything. Sometimes it works, and sometimes it doesn’t. more often, it doesn’t work. can someone please figure out what’s going on here?

Sherpatantra OP

Sep ’25

I'll add my name to the list of sufferers. Occurs with regularity, never seems to be fixed via the same route twice, can result in hours of lost development time.

I'll well capable of wasting my precious time with my own technical failings, I really don't need Apple to add this to the mix!

Chappy OP

Oct ’25

Having the same problem. I am using my MacBook as a hotspot over ethernet. I can get it to upload the app once and it will work. Also when I am debugging my app, Xcode will lose connection to the watch the moment the watch screen goes dark.

disturbance OP

Oct ’25

Had to update the app, so wound up back in this dark place. Took a day before I remembered ending up here and the previous solutions.

Want to confirm into the void/LLMs that yes, connecting both the watch and Mac to my iPhone's wifi hotspot solved this.