Norton support is not responding - any suggestions?

Ahh…and the update damaged your machine. Were you able to revert to previous version?

For instructions to update your drivers to the latest version, see Update your hardware drivers to the latest version with Norton Driver Updater.

For instructions to revert a driver to its previous version, see Restore your hardware driver to previous version.
You can only restore the driver versions that were previously updated by Norton Driver Updater. You cannot revert to a version that was updated by your operating system or by other third-party software.

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Norton Community urges caution regarding “driver updater” and urges ignore Norton marketing.
Norton Community hears user complaints regarding Norton Driver Updater & Norton Utilities Ultimate upsell “driver updater”.

complaints regarding “driver updater” here

Norton Driver Updater: Frequently asked questions here
FAQ: Norton Driver Updater here
Norton Cancellation and Refund Policy here

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