Description |
This article describes how to resolve OTP verification timed out error in Exchange OWA with FortiAuthenticator agent installed. |
Scope | FortiAuthenticator 6.4.4, 6.4.5, 6.4.6 and FortiAuthenticator agent 2.4, Microsoft Exchange Server. |
Solution |
If the following components are installed: - FortiAuthenticator 6.4.4, 6.4.5 or 6.4.6. - FortiAuthenticator agent version 2.4 and above on Windows server 2012 R2. - Microsoft Exchange Server 2016.
The following error will be displayed on the browser when accessing the Microsoft OWA page.
'OTP verification timed out. Please contact your network administrator.'
In FortiAuthenticator, by default 'Require Strong Cryptography' is enabled under System -> Administration -> System Access.
Workaround: - Disabling the 'Require Strong cryptography' setting in administrative access on the FortiAuthenticator fixes the problem.
Or
- The FortiAuthenticator OWA agent does not have its own list of ciphers; it relies on the TLS settings of the underlying operating system. So the base operating system should support one of these Ciphers.
FortiAuthenticator supports these Cipher(s): Note: Enabling or disabling 'Require Strong Cryptography' will restart the FortiAuthenticator web server. |
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