Microsoft Fabric Updates Blog

Updated Timeline: Eventhouse OneLake availability migration

The migration timeline will now start May 7th, instead of the original scheduled start of April 9th.

As a reminder, we will be migrating the data you have enabled for OneLake Availability in Eventhouse. During this migration, we will be backfilling all of your data along with moving it to an area of OneLake that is designated not to be charged. This allows us to simplify the billing process and provide you with the complete history of your tables.

What this means for you:

  • During the migration there will be a short period where all of your delta parquet files will not be available as we backfill the records.
  • Once completed you will have a complete copy of the table back to the length of retention set on the table.
  • You will continue to access the OneLake files in the same way and with the same performance and scale.
  • This will not have any effect on accessing the data within your Eventhouse, it will only affect the delta parquet files made available via the OneLake Availability feature.

Thank you for your understanding and cooperation as we continue to improve your experience in Microsoft Fabric!

Zugehörige Blogbeiträge

Updated Timeline: Eventhouse OneLake availability migration

April 20, 2026 von Mehrsa Golestaneh

In our previous post, Operationalizing Agentic Applications with Microsoft Fabric, we focused on a core challenge teams encounter once an agentic application moves beyond a proof of concept: operational reality. Specifically, how do you observe, govern, evaluate, and analyze what agents are doing once they interact with real users, data, and business processes at scale? … Continue reading “Evolving Agentic Applications on Microsoft Fabric: From Automated Deployment to Integrating Data Agents”

April 16, 2026 von Tom Peplow

Have you ever tried to understand what’s stored in your Fabric items? Would you even know where to begin? I had 92,000 UK property transactions sitting in an open mirrored database. Rather than spending hours sorting through documentation, I just asked my AI agent: “Document what’s in the House Price Open Mirror in my UK … Continue reading “Give your AI agent the keys to OneLake: OneLake MCP (Generally Available)”