This post is just to serve as a timely reminder to ensure that you are ready for the upcoming behaviour changes in how Azure will treat default outbound network access.
Azure will soon change how default outbound network access is handled by Virtual Machines, which could impact resources that rely on implicit outbound access routes to the Internet.
These changes are due to come into effect after 30th September 2025 which is just over one month away.
Hopefully, if you are reading this then you are already well aware of the changes and are fully prepared. If not, and if you are looking for help then I recommend to first read through my previous post on this subject which you will find here.
If you are struggling to identify which of your Azure resources will be affected by this change then try out my KQL query which you will find in this GitHub repo.
Have questions? Drop them in the comments or contact me directly—I’m happy to help.
azurealan.ie 