Kaspersky
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What to do if Kaspersky notifies about untrusted certificate or connection not protected

  • 2 October 2021
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The product may notify you of a problem with the certificate while opening the website.

This may be because the root certificate DST Root CA X3 was expired. So users on different devices (Windows, macOS, Android, iOS), mostly on older versions, can encounter sites access issue.

 

Workaround

Install latest OS updates, browser updates.


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