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KB-8757: How to exclude other credential providers to prevent bypassing windows agent MFA

Centrify DirectControl ,  

24 May,17 at 12:02 AM

Applies to: Centrify Agent for Windows Suite 2017 and above

How to exclude other credential providers to prevent bypassing Centrify windows agent's MFA

For example Symantec, VMWare or Amazon can allow users to extend the Windows logon experience and thus bypass the Centrify MFA. 

Steps to disable other credential providers:

1) Find out the Last Used Credential Provider ID of the other credential provider by checking the registry key:
To find all credential provider IDs:
"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\Credential Provider Filters"
"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\Credential Providers"
Under this registry key, click on each sub key to find out the other credential providers by software name (by looking at the "Data" column of the "(Default)" value). When it is found, copy the sub key name which is a CLSID string, e.g. {A3193558-BB44-4ddd-B0F9-001362EFB898}

2) Go to Centrify GP located at:

Computer Configuration\Centrify Settings\Windows Settings\MFA Settings\specify the credential providers to exclude from the logon screen

Place the Credential Provider CLSID string copied in Step 1 (enclosed with {}) to the value field, together with the pre-filled CLSIDs (for Microsoft Password Credential Providers), comma-separated for multiple CLSIDs.,

3) Push this GP settings to the client machine to take effect.

Or you can also set the same value to local registry "ExcludedCredProviders" (REG_SZ) under HKEY_LOCAL_MACHINE\SOFTWARE\Centrify\DirectAuthorize\Agent

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