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Unable to update ESET File Security V.6.4

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Dear Sir,


​Problem: Update authorization failed. Please check if your license is valid." error while updating EFS V.6.4


ESET File Security already activated & also try to reactivate EFS, but same issue.


so how to resolve this issue?





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  • ESET Staff

We've received more support cases regarding activation recently. These problems were fixed a few days ago, are you still experiencing the problem with activation/update?

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  • 4 weeks later...
Hey  any idea for
Failed to authorize update  with ECP.4100
ESET file security is active and later the agent installation is automatically disabled?
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