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800700c1

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The error code 800700c1 is a Windows Update error that prevents successful installation of system updates. Users encountering this error may also face issues with third-party software installation or removal, such as Norton Internet Security, due to problems with the Microsoft Windows Installer. Troubleshooting steps often involve addressing the Windows Installer authentication failure, which can block both Windows updates and software management tasks. This error can persist for extended periods, making it difficult to keep the system updated.
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    Windows Vista Windows Update problem

    I havent been able to successfully install a Windows update for a year now. When I search for updates, I get the error code: 800700C1. Also, I have been trying to install updates for my Norton Internet Security, and suprise, I havent been able to do that either. WHen I try to uninstall the...
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    • 800700c1 error installation issues installer malware norton software issues system error troubleshooting windows update
    • Replies: 4
    • Forum: Windows Help and Support
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