Disable Autodiscover in Office 365

Disable Autodiscover in Office 365

We’ve been getting reports of users with their Office 365 subscription using their hosted email address (with hosting.ca). All new outlook 365 or Outlook Live acconts will automatically try to connect to Office 365 first. This is how you would disable autodiscover in office 365.

We have a registry key to help disable this functionality as this will fix connectivity to our hosted Exchange services.

Create a new notepad file and name it “disableautodiscover.reg” and paste the following contents inside:

Windows Registry Editor Version 5.00


The official document from MS is: https://support.microsoft.com/en-ca/help/2212902/unexpected-autodiscover-behavior-when-you-have-registry-settings-under

There is another document regarding Windows 10 users running office 2010 products as well.