How to Fix "Sketch File Not Opening on macOS 11 (Big Sur)"
Sketch not opening on macOS 11 (Big Sur) is a known issue that may arise after updating your operating system.
The first step is to check for Sketch updates, as compatibility issues are often addressed in the latest versions of the software.
Go to Sketch > Check for Updates and ensure you have the most recent version installed.
If you’re on the latest version, try restarting your Mac and then attempting to open Sketch again.
If Sketch still doesn’t open, try opening the application while holding the Shift key.
This disables plugins and may help you determine if a plugin is causing the issue.
If Sketch opens in this mode, the problem is likely related to a plugin.
You can disable plugins by going to Plugins > Manage Plugins and turning them off.
Afterward, enable the plugins one by one to identify the one causing the issue.
If Sketch still doesn’t open, try deleting the Sketch preferences file, which is located in ~/Library/Preferences/com.bohemiancoding.sketch3.plist.
Deleting this file will reset your Sketch preferences and might resolve any issues caused by corrupted settings.
Another solution is to uninstall Sketch completely and then reinstall it.
Be sure to also delete any Sketch-related files from your system, such as caches and preferences, before reinstalling.
If none of these methods solve the issue, it's possible that the installation of macOS 11 (Big Sur) caused some system-level conflicts.
In this case, try contacting Sketch's support team for assistance, providing details about your macOS version and the exact behavior you’re experiencing.
