Why does OneDrive require Port 80? Required Ports and URLs for OneDrive

TvS-6140 0

Hello,

so I need to request access to the Ports and URLs OneDrive needs but there is no chance that I am getting Port 80 cleared from my Proxy Admins. (Corporate Environment with OneDrive for Business)

I am referring to https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide - "Sharepoint and OneDrive for Business".

So I am left to wonder if OneDrive really needs Port 80 or if it would be acceptable to only allow Port 443 connections to the required adresses?

My second questions is, are the URLs mentioned under "Sharepoint and OneDrive for Business" with tag <required> sufficient to use my OneDrive client? I only want to establish connection and synchronize files to my local machine, that's it.

What confused me is this page: https://learn.microsoft.com/en-us/microsoft-365/enterprise/managing-office-365-endpoints?view=o365-worldwide#pacfiles. Under "I have to have the minimum connectivity possible for Microsoft 365".

It says "The Microsoft 365 suite is broken down into major service areas. These areas can be selectively enabled for connectivity and there's a Common area, which is a dependency for all and is always required.", however when looking at the required adresses of the "Common Area" I am sceptical if they are actually necessary as they don't seem to involve OneDrive.

B Santhi Swaroop Naik 0 Reputation points

2024-04-10T09:40:43.8433333+00:00

Port 80 /443: OneDrive for Business primarily uses HTTPS (Port 443) for communication, which is secure and commonly allowed through corporate proxies. Port 80 (HTTP) is often blocked for security reasons. You should request access for Port 443 instead of Port 80 for OneDrive functionality.

The URLs listed under "SharePoint and OneDrive for Business" with the <required> tag are essential for using OneDrive. These URLs provide the necessary connectivity for your OneDrive client to establish connections, sync files, and operate smoothly on your local machine.

Understanding Connectivity Needs: The Microsoft 365 suite, including OneDrive, relies on specific URLs and services to function properly. While some connectivity options can be selectively enabled, the "Common area" addresses mentioned are indeed necessary for overall Microsoft 365 functionality, including OneDrive.
TvS-6140 0 Reputation points

2024-04-10T10:35:06.82+00:00

Thank for the swift response. Is there any way you could mention the specific URLs necessary from the Common Area for OneDrive?

An example: In my opinion ".cortana.ai" is not relevant to OneDrive, and I could not justify the need of this URL to my proxy admins.
B Santhi Swaroop Naik 0 Reputation points

2024-04-15T04:17:01.0133333+00:00
OneDrive and related Microsoft services, the specific URLs you may need to mention to your proxy admins typically include:

onedrive.live.com: This is the primary web address for accessing OneDrive online.

office.com: Often used as a portal to access OneDrive along with other Office applications and services.

sharepoint.com: Since OneDrive is integrated with SharePoint, accessing files and folders via OneDrive may involve URLs related to SharePoint.

microsoft.com: This domain is sometimes used for authentication and background services related to OneDrive.

These URLs are key components of the infrastructure that supports OneDrive functionality. If your proxy admins have specific URL filtering or security policies in place, they may require these URLs to be accessible for proper OneDrive usage.