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    When you encounter a JavaScript error in Unity Hub, it typically indicates issues with accessing the Temp folder or permissions. This error can prevent Unity Hub from launching properly.

    Example

    A JavaScript error occurred in the main process
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    Common Causes and Solutions

    1. Check Temp Folder Permissions

    The error may be caused by Unity Hub not being able to access the Temp folder. Ensure that the TEMP and TMP environment variables are correctly set to their default values.

    Example:

    C:\Users\YOUR-USER-NAME\AppData\Local\Temp
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    Solution:

    1. Navigate to C:\Users\YOUR-USER-NAME\AppData\Local\Temp.

    2. Right-click on the Temp folder and select Properties.

    3. Go to the Security tab and click Advanced.

    4. Change the owner to your admin user profile and ensure full permissions.

    2. Run as Administrator

    Running Unity Hub with administrator privileges can sometimes resolve the issue.

    Example:

    Right-click on Unity Hub > Run as administrator
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    3. Reinstall Unity Hub

    If the issue persists, try reinstalling Unity Hub.

    Example:

    What should I do if unity is not working?
    If errors persist, try deleting the Library and Temp folders in the project directory and restarting Unity to rebuild them. Additionally, keep all third-party assets and Unity versions up to date to prevent compatibility issues. If all else fails, re-import the affected scripts or check Unity's official documentation for troubleshooting steps.
    vagon.io
    Sentry
    https://blog.sentry.io › common-unity-errors-how-to-fix-them

    Common Unity Errors and How To Fix Them | Sentry

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    https://discussions.unity.com › a-javascript-error...

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    Apr 5, 2021 · After I installed Unity hub and tried to Launch it in Windows 10 , "a javascript error occurred in the main process" appeared. Anyone encountered the same error? How to fix it?

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