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You can restore the DualShield IIS Agent settings in 2 ways, manually or by a PowerSheel script.
Manual
This has to be done on every IIS node that is enabled with DualShield 2FA. Let's use OWA as an example. In the IS Manager, navigate to the OWA node:
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Repeat the above work on every node that's been affected.
PowerShell Script
On the Exchange CAS server, launch a Windows command prompt, navigate to the folder:
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