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Fix problems downloading your Norton device security product
This article provides troubleshooting steps for issues you might encounter while downloading or installing your Norton device security product on Android, Mac, iOS, and Windows.
Download or install doesn't start or complete
Your Norton device security installation begins when you run the downloaded file.
To locate the downloaded file, do one of the following depending on your browser:
- Windows: Press Ctrl + J to open the Downloads window in your browser, and double-click the file you downloaded.
- Mac: Press Command + Option + L to open the Downloads window in your browser, and double-click the file you downloaded.
If nothing appears when you start the installation, the install window might be hidden behind other windows. Minimize all open windows to see the installer.
If the download does not start or progress, re-download the file. For detailed instructions, read Download and install your Norton device security product.
If the installation did not complete, or if you cannot open your Norton device security, download and run the Norton Remove and Reinstall tool. Read Download and run the Norton Remove and Reinstall tool.
I see an incompatibility message
Norton products are not compatible with Chromebooks.
Click one of the links depending on the message you see:
On Windows:
- "This product is not compatible with this computer's current operating system..."
- "Your version of Norton product is incompatible with this version of Windows..."
- Error: "One or more programs on your computer are not compatible with this Norton product..."
On Mac:
- "Incompatible Software: This version of Norton product is not compatible with this version of macOS"
- "We have detected an incompatible version of Norton product. Please uninstall the existing version..." on Mac
- "Installation failed: We have detected incompatible security software installed on your computer. Please uninstall..."
Other install errors
- Error: "Another version of a Norton product has been detected on this computer..."
- Message: "You have no remaining installs" while installing a Norton device security product
- Error: "System Error" when downloading your Norton product
- Message: "We are sorry. We are unable to download the support packages..." on Mac
- Message: "...You haven't finished Setup and your computer is not protected..." on Mac
Video
Need more help?
- Download your Norton product purchased from a retail store
- Download and install Norton 360 app on your mobile device
Quick answer
To resolve Norton download or installation issues, locate the downloaded file, minimize open windows, re-download the file if needed, or run the Norton Remove and Reinstall tool.
Scope
- This article covers common download and installation problems.
- Incompatibility issues with Chromebooks are noted.
- Specific error messages and their corresponding solutions are linked.
When this applies
- Users experiencing issues downloading or installing Norton device security products.
- Applies to Windows, Mac, Android, and iOS platforms.
When this does not apply
- This article does not cover issues related to product activation or subscription renewals.
- This article does not address problems with Chromebooks.
Definitions
Norton device security product: A software application designed to protect devices from malware, viruses, and other online threats, such as Norton 360.
Norton Remove and Reinstall tool: A utility that uninstalls existing Norton products and reinstalls a fresh copy, resolving installation issues.
Prerequisites and warnings
Prerequisites
- Administrative rights on the device you are installing Norton.
- An active Norton subscription.
- Internet access to download the installation file.
Assumptions
- The user has a compatible operating system.
- The user has already purchased a Norton subscription.
Warnings and limitations
- Using the Norton Remove and Reinstall tool will remove all Norton products from your computer, and you may need to reinstall other Norton products after.
- Norton products are incompatible with Chromebooks.
Last modified: 03/23/2026
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