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I have a workflow where I use SSH in terminal in conjunction with remote desktop, and I often use the open command in SSH to open something in the GUI.

However, recently it stopped working with the following failure:

$ ssh 127.0.0.1
$ open .
The application cannot be opened for an unexpected reason, error=Error Domain=NSOSStatusErrorDomain Code=-600 "procNotFound: no eligible process with specified descriptor" UserInfo={_LSLine=387, _LSFunction=_LSAnnotateAndSendAppleEventWithOptions}

Just running open . locally on the machine works fine, it opens finder at the current working directory. It also seems to have started happening recently in Mac OS Monterey, but I wasn't able to track down exactly on which version it stopped working.

Any ideas what is causing this or how it can be worked around?

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    Have you Google searched some of those errors? I looked up one, and got this thread, which simply says to reboot. I assume you tried it, but worth mentioning. developer.apple.com/forums/thread/653027 Commented Aug 4, 2022 at 16:42
  • I'm curious, are you using tmux? I had this problem when running open from inside tmux. I quit tmux server (involves closing all windows) and reopened, and now the problem is gone and I haven't found a way to make the problem reoccur (to file a bug report). Commented Nov 12, 2025 at 1:43

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