System extention will not install for Big Sur 11.3.1

  • 25 May 2021
  • 1 reply

I’d like to have some tech support to findout why I can;t get Kaspersky to work. I have a Mac with Big Sur 11.3.1. I upgraded my Kaspersky and now because the system extension won't load or fully install the whole Kaspersky system does not work. I can't scan anything now.

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Userlevel 7
Badge +7


Follow these steps:

1) Uninstall the KIS 21 for Mac: https://support.kaspersky.com/15587#block2
2) Restart Mac.
3) Try to install KIS 21again (please use latest build from our site).


Check problem. If persists - please contact with our support team: https://support.kaspersky.com/b2c