Installed Xcode - Canvas fails to boot

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EsoNew OP

Created 1d

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Downloaded Xcode 26.2 from App Store. Started new Project, which defaults to "hello world".

The canvas "simulator" within fails to finish indexing (paused), or
When the canvas is active, the first code change (i.e. just a return key at the end of a line) cause the Xcode program to come to a stop.

Have ended Xcode and rebooted a number of times. A number of remedies are posted on the net. All a little different than the other.

Is there a current remedy for Xcode 26.2 to this issue available?

iMac on Sequoia 15.7.3 , 800 gb of available storage

Xcode: 26.2 (24553) Instruments: 26.2 (64573.16) SDKs: DriverKit: 25.2: iOS: 26.2: (23C53) iOS Simulator: 26.2: (23C53) macOS: 26.2: (25C57) tvOS: 26.2: (23K50) tvOS Simulator: 26.2: (23K50) visionOS: 26.2: (23N301) visionOS Simulator: 26.2: (23N301) watchOS: 26.2: (23S303) watchOS Simulator: 26.2: (23S303)

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Answer 1

DTS Engineer OP

Apple

1d

Thanks for the post.

It seems like you're experiencing issues with Xcode 26.2 on macOS Sequoia. So the preview stops rendering anything in a simple Hello World app? Would you like to post the app here for developers to test and see how it behaves?

If so, please share a link to your test project. That'll help us better understand what's going on. If you're not familiar with preparing a test project, take a look at Creating a test project.

Verify that both your macOS and Xcode versions are fully updated. Since you're on Sequoia 15.7.3 and Xcode 26.2, check for any available updates for macOS that might address. I would recommend to move to macOS Tahoe.

Sometimes, clearing derived data can resolve issues related to indexing and builds. You can do this by navigating to and deleting the contents. If the canvas is causing Xcode to hang, try disabling it temporarily. Open your project settings, navigate to the section, and uncheck “Live Views”.

As a more drastic measure, consider completely uninstalling Xcode and reinstalling it from the App Store. This can help if some files were corrupted during the initial download or installation. Look into for any crash logs related to Xcode when it stops. This might give insight into specific issues. Can you see any crash file created including any diagnostic logs?

However when you install the app on a physical device you don’t have any issues is just the preview?

Albert Pascual   Worldwide Developer Relations.

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