I have a group of XCUItest suites that were designed to run in parallel on simulators. They run fine in xcode 16.2, but when I try to run them in Xcode 26 they run fine the first time, but on the second time I get an error that the simulator cannot be found: No matching device (62621AD4-C8D6-4A1B-B511-79236113FD94) . This UDID seems to be from one of the clones that were spawned on the previous test run. No matching device (62621AD4-C8D6-4A1B-B511-79236113FD94) in set at /Users/myUser/Library/Developer/XCTestDevices Domain: com.apple.CoreSimulator.SimError Code: 404 User Info: { DVTErrorCreationDateKey = 2026-02-26 22:52:53 +0000; IDERunOperationFailingWorker = _IDEInstalliPhoneSimulatorWorker; } If I clean all simulators and try to run again without closing Xcode, it keeps trying to access the clone that no longer exists. If I close an reopen xcode after removing all simulators ~/Library/Developer/XCTestDevices, xcode keeps trying the wrong device and I get the following error: Failed to clone device named '
Topic:
Developer Tools & Services
SubTopic:
Xcode
1
0
113