How to disable Zimbra two factor trusted devices

It is well known that you can enable 2FA in Zimbra Network Edition to enhance account security. All details on Zimbra 2FA can be found at

Zimbra also enables by default the Trusted Devices feature. This allows users to enter their 2FA token only once for each device. Consider turning off the Trusted Devices feature, it will be a little less user friendly but more secure.

For example if you use the default Class of Service use:

zmprov mc default zimbraFeatureTrustedDevicesEnabled FALSE
# Verify what Classes of Service are available on your system by running:
zmprov gac


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