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Reply to I'm currently using macOS 26 and Xcode 26, but I'm unable to download iOS 26 simulators.
It's been nearly 20 days since I first reported this issue, and I've noticed many developers are experiencing similar problems. I have submitted the sysdiagnose report twice through Feedback Assistance but have yet to receive any useful responses from Apple Developer Support. I am eager to assist Apple in identifying this bug and improving their products, but it seems they are uninterested. They haven't even bothered to examine the issue or respond. I have no other option but to wipe my entire disk and reinstall macOS and other software, which has cost me many hours. I'm sharing this conversation here to show developers how Apple handles support for its developers.
Nov ’25
Reply to I'm currently using macOS 26 and Xcode 26, but I'm unable to download iOS 26 simulators.
2025-11-10 15:13:01.021 xcodebuild[96294:594234] DVTDownloadable: Download Failed. Downloadable: { architectures = ( arm64 ); authentication = none; category = simulator; contentType = cryptexDiskImage; dictionaryVersion = 2; downloadMethod = mobileAsset; fileSize = 8321575812; identifier = "com.apple.dmg.iPhoneSimulatorSDK26_1_arm64"; isInternalContent = 0; isUserInitiated = 1; name = "iOS 26.1 Simulator (23B80)"; patchableFrom = ( ); platform = "com.apple.platform.iphoneos"; simulatorVersion = { buildUpdate = 23B80; version = "26.1"; }; version = "26.1.0.0"; }. Download failed.
Nov ’25
Reply to I'm currently using macOS 26 and Xcode 26, but I'm unable to download iOS 26 simulators.
2025-11-08 15:25:29.891 defaults[84021:4409624] Domain (com.apple.MobileAsset) not found. Defaults have not been changed. 2025-11-08 15:25:29.912 defaults[84023:4409633] Domain (com.apple.MobileAsset) not found. Defaults have not been changed. 2025-11-08 15:25:29.930 defaults[84025:4409640] Domain (com.apple.MobileAsset) not found. Defaults have not been changed. Finding content... Automatically resolved architecture variant for platform iOS as 'universal'. 2025-11-08 15:25:32.343 xcodebuild[84026:4409646] DVTDownloadable: Download Failed. Downloadable: { architectures = ( arm64, "x86_64" ); authentication = none; category = simulator; contentType = cryptexDiskImage; dictionaryVersion = 2; downloadMethod = mobileAsset; fileSize = 10066610754; identifier = "com.apple.dmg.iPhoneSimulatorSDK26_0_1"; isInternalContent = 0; isUserInitiated = 1; name = "iOS 26.0.1 Universal Simulator (23A8464)"; patchableFrom = ( ); platform = "com.apple.platform.iphoneos"; simulatorVersion = { buildUpdate = 23A8464; version = "26.0.1"; }; version = "26.0.1.0"; }. Download failed.
Nov ’25
Reply to I'm currently using macOS 26 and Xcode 26, but I'm unable to download iOS 26 simulators.
I wanted to follow up on my previous message regarding the simulator download issue in the latest Xcode. I’ve already provided all the requested details, but I haven’t received any update yet. To be honest, I’m becoming increasingly frustrated with the lack of response and progress. This issue has completely blocked my development work — I’m unable to run or test any iOS projects until this is resolved.
Oct ’25