Configuration Change - Microsoft Defender for Cloud Apps
From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Action date
What the notice says
Microsoft’s text, safely structuredWe're making some changes to the IP lists that need to be added to the allowed list (whitelist) in your organization.
When this will happen
On January 23, 2024, we're updating the IPs listed in Network requirements.
These changes will go into effect late February 2024.
How this will affect your organization
You are receiving this message as you have a product that requires these IPs whitelisted to ensure the proper running of our service. Failure to update the allowed list (whitelist) in your organization, could result in degradation of service.
What you need to do to prepare
Review the updated list of allowed IP addresses (Network requirements) and make changes as appropriate for your organization.
What changed
Between archive captures, newest first… need to be added to the allowed list (whitelist) in your organization.
When[When this willhappen:happen:] On January 23, 2024, we're updating the IPs listed in Network requirements. These changes will go into effect late February 2024.How[How this will affect yourorganization:organization:] You are receiving this message as you have a product that requires … allowed list (whitelist) in your organization, could result in degradation of service.What[What you need to do toprepare:prepare:] Review the updated list of allowed IP addresses (Network requirements) and make …- · first version seen
Learn more
Links from the notice and their documentation checks- Network requirementsChecked 15 Nov 2026
Related public changes
No related announcements were found in the saved public history. Check the source for newer announcements.
Not confirmed here
What this page cannot tell you- Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.