How to manually create additional Outlook 2016 profiles with ZeroConfigExchange in place

Applies to: Outlook 2019Outlook 2016

Background information of ZeroConfigExchange


The concept of Reliable Profiles was introduced in Microsoft Outlook 2016. As a result, we don’t recommend using Outlook profile (.prf) files to create profiles in Outlook 2016. Instead, we recommend enabling automatic profile creation by using the ZeroConfigExchange registry key or the Automatically configure profile based on Active Directory Primary SMTP address policy.

ZeroConfigExchange controls profile creation


ZeroConfigExchange works well for the first profile to be automatically created, with no user action. But you may want to create an additional profile that connects to a different Exchange account. You are unable to do that because you can’t bypass ZeroConfigExchange to manually configure the profile.

This is by-design behavior, as ZeroConfigExchange controls the creation of any Outlook profile.

How to create additional profiles


Note This method currently only applies to Outlook 2016 Click-to-Run Version 1708 (Build 8431.2079) and later versions. For Outlook 2016 MSI-based versions, the method will apply to the November PU for Outlook 2016 and later versions.

To create additional profiles without the intervention of ZeroConfigExchange, add the ZeroConfigExchangeOnce registry subkey. To do this, follow these steps:

  1. In Registry Editor, browse to the following registry subkey:

    HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\AutoDiscover

  2. Create a DWORD value that has the following name and value:

    Name: ZeroConfigExchangeOnce

    Value: 1

More information


After you add ZeroConfigExchangeOnce, ZeroConfigExchange still controls the automatic creation of the first profile. After the first profile is automatically created, you can manually create additional profiles that connect to different Exchange accounts.

If ZeroConfigExchange and ZeroConfigExchangeOnce are both set with a value of "1" at the above registry path, please note that ZeroConfigExchange always takes precedence.