Outlook 2016 Deletes registry entries under MailSettings upon first run RRS feed

  • Question

  • Good Afternoon,

    Wondering if anyone has experienced below issue and if there is a way to address it.


    Description: Upon first run Outlook 2016 deletes registry settings located in   HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\MailSettings reg key.



    We are deploying mail fonts to MailSettings key via GPO. Whether in Citrix or on a Local machine upon log on the MailSettings reg key gets populated via GP. However, those same reg settings are getting deleted once a user lunches outlook for the first time which causes fonts to go back to Calibri 10. Upon closing the outlook and forcing group policy update the issue gets resolved.

    This is not a big issue on a pc or laptop but is a huge problem for Citrix. In Citrix VDI  we don’t have persistent profiles so every time a user logs on their profile gets recreated which causes the outlook to execute “first run” routine and wipes above reg settings which were pushed via GPO.



    W10 Ent x64 1703. Using OCT 2016 to customize Office 2016. Imported fonts via reg settings into office via OCT Tool, Citrix Server 2016 XanApp 1811.1


    Is this is an OCT issue, Plain office issue or something else ? I saw some similar issues with O 2010.  https://social.technet.microsoft.com/Forums/ie/en-US/45af048b-3d8d-41c7-8373-d5a95dbcf48a/why-are-outlook-2010-default-fonts-reset-on-first-launch?forum=officesetupdeployprevious


    What’s the best way to address this ? TIA

    Thursday, April 18, 2019 6:29 PM

All replies

  • Are you running any First-Run depended scripts? If not, then you can deploy the First-Run Registry value to;

    Robert Sparnaaij [MVP-Outlook]
    Outlook guides and more: HowTo-Outlook.com
    Outlook Quick Tips: MSOutlook.info

    Thursday, April 18, 2019 9:20 PM
  • Hi,

    Just checking in to see if the information of Roady was helpful. Please let us know if you would like further assistance.


    Aidan Wang

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    Monday, April 22, 2019 6:31 AM
  • Hello!

    I'm having the same challenges. Attempting to set default fonts in Outlook, the mail settings registry is cleared out when Outlook launches.

    Have tried several methods such as the registry shown below my comments for a first run config (both 32 and 64 bit locations) including the first run outlook keys cleared in both 32 bit and 64 bit locations. They populate and remain if you launch Excel or Word, but the second you launch Outlook the MailSettings is cleared and repopulated with data not relevant to us as the Outlook 365 account detect screen runs.

    We can do it with group policy and an update/reapply/reapply approach, but with the way our OUs are laid out it would prove complicated to manage as we have Chinese speaking countries with a different default separated at a level that wouldn't make sense to deny inheritance / apply policy. We also don't want the GPO approach to be too heavy handed as we have an existing userbase that we don't want to impact.

    Any ideas?

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\User Settings\Outlook365]

    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\User Settings\Outlook365\Create\Software\Microsoft\Office\16.0\Common\MailSettings]

    [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Office\16.0\User Settings\Outlook365]

    [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\16.0\User Settings\Outlook365\Create\Software\Microsoft\Office\16.0\Common\MailSettings]

    Wednesday, June 12, 2019 1:53 AM