Unable to Start Microsoft Fabric Trial – Lakehouse Creation Fails
Hello Microsoft Fabric Team, I am a BCA student from India and I am currently learning Microsoft Fabric for educational purposes. I need access to Fabric features such as Lakehouse, Notebooks, and Data Engineering to complete my learning and hands-on practice. Unfortunately, I am unable to start the Microsoft Fabric trial on my account. My Power BI trial is active (59 days remaining), but whenever I try to create a Lakehouse or click "Start Fabric trial", I receive the following error: "Sorry, we are unable to start trial at this time." I have already verified the following: - My Power BI trial is active. - The tenant setting "Users can try Microsoft Fabric paid features" is enabled. - I am signed in with the correct Microsoft account. - The issue occurs every time I try to create a Lakehouse. Error details: Activity ID: a6e33655-e11b-4ca1-9fdf-322928b6540c Request ID: 2160d856-3b1c-4fa3-80c9-41e043e2efe6 Correlation ID: e741fc43-8faf-9d31-923d-749d5b6eb5d3 Status Code: 200 Cluster: India Central Could you please check whether my account is eligible for the Microsoft Fabric trial? If there is any issue with my account provisioning or eligibility, I would greatly appreciate your assistance in resolving it. As a student, I am using Microsoft Fabric only for learning and practice, and access to the Fabric trial is essential for completing my coursework and hands-on labs. Thank you for your time and support. Kind regards, Mohd Zaid
On-Prem Data Gateway Silent Error and storage cache
Hello, I'm writing to try and understand an issue we had in office today. Over the weekend we received a semantic model refresh error that said our data gateway went offline. Our first error came at midnight on Saturday. We have most semantic models scheduled for either midnight or 1am. When I got into the office today and noticed that our reports had not been updated since Friday, I found that within Power BI service under workspace connections when I realized that our on on-prem data gateway was offline. When I investigated our SQL server which is where our gateway is installed our C: Drive was using 199gb of 200. The on-premises data gateway service had a status of running. Our SQL data is stored in the 😧 drive and that was healthy, the gateway is installed on the C: Drive. We expanded the drive and restarted the server. This caused a power automate flow, which uses the SQL trigger "When an Item is created (v2)", to execute everything over everything that was added through the weekend. Our C Drive is now at ~150gb of 250 (since we expanded). This is leading me to believe that the On-Premises data gateway lost connection sometime Friday, started caching 2.5 days worth of data, and clogged our C Drive. Is this supposed to happen? Is there a way for us to know if the gateway lost connection without waiting for a semantic model refresh error?
Snowflake Mirroring – Error 100089 / AuthenticationError during replication
Hi everyone, I'm experiencing an issue with Microsoft Fabric Mirroring for Snowflake. On the Snowflake side, the COPY INTO command issued by Fabric Mirroring fails with the following error: Error 100089: Failed to access remote file: access denied On the Fabric side, the mirrored database shows AuthenticationError and the status "Running with warnings." Interestingly, some large tables (around 700 million rows) successfully completed the initial replication, while other tables fail with the error above. In addition, currently all tables show the following warning: Could not obtain a connection from the pool within a given timeout ErrorCode: AuthenticationError SequenceNumber: 154 Since some very large tables were replicated successfully, I'm not sure whether this is actually related to Snowflake permissions/authentication, or whether it could be related to the connection pool, temporary staging/remote file access, or Fabric Mirroring itself. Has anyone encountered a similar issue with Snowflake Mirroring? In particular, I would appreciate any guidance on: What could cause Failed to access remote file: access denied for the COPY INTO command generated by Fabric Mirroring? Why would only some tables fail while others successfully complete the initial replication? Could the Could not obtain a connection from the pool within a given timeout warning be related to the Snowflake COPY INTO access-denied error? Are there any logs or additional diagnostics in Fabric that can help identify the root cause? Any suggestions would be greatly appreciated. Thanks!
Creation of fabric trial account
I created my tenant account 5 days back and now would like to create a fabric account for practice. The free trail only gives me powerbi trail and not the fabric. I have my exam voucher where exam need to be scheduled by 30th september. I am in urgent need for hand on practice on fabric. Is there any work around this? Kindly help me out
Datagateway stuck at "Failed to sign in. Please Verify your credentials and try again."
Im droping this here as i didnt see anywhere where this had been addressed. When trying to signin to the data gateway the app freezes and says "Failed to sign in. Please Verify your credentials and try again." The credentials are good and everything was fine prior to update. I got this after updateing the datagateway. The app freezes up and you have to force close. The work around is that you click signin options prior to entering email select these options and it will redirect you to your browser to login and wont lock up hope this someoneFabric Trial Activation Screen Appears but Trial Is Not Available
Hello Microsoft Fabric Community, I am a BCA student from India and I am currently learning Microsoft Fabric for educational purposes. I need access to Fabric features such as Lakehouse, Notebooks, and Data Engineering for hands-on practice. I am facing a confusing issue while trying to activate the Microsoft Fabric trial. My Power BI individual trial is already active and shows 59 days remaining. However, when I click "Start Fabric trial", I get the "Activate your 60-day free Fabric trial capacity" screen. The activation screen shows: - A 60-day free Fabric trial capacity - Trial capacity region: Default – Central India - An "Activate" button However, after proceeding, I receive this message: "Your Power BI trial is active Your free Power BI trial gives you 60-day access to Power BI paid features. A Fabric trial isn't available for your account. See the Microsoft documentation for eligibility requirements." This is confusing because the previous screen allows me to activate a 60-day Fabric trial capacity, but the next message says that a Fabric trial is not available for my account. I have also already confirmed that: - Users can create Fabric items is enabled. - Users can try Microsoft Fabric paid features is enabled. - My Power BI trial is active. - I am using a newly created tenant. - I am trying to use Fabric for learning and educational purposes. I do not have a college-issued student email/Student ID that I can use for verification. Could someone please clarify: 1. Why is the Fabric trial activation screen appearing if my account is not eligible? 2. Is my newly created tenant too new for a Fabric trial? 3. Is there any legitimate way to enable a Fabric trial capacity for this account? 4. If I am not eligible, what is the recommended way for a student to practice Fabric features such as Lakehouse and Notebooks? I would really appreciate any guidance, as I need Fabric hands-on practice for my learning. Thank you.Deep-Dive: Microsoft Fabric Warehouse Internal Architecture (Polaris, V-Order & Lakehouse Tradeoffs)
Hi Fabric Community, I’ve spent the last few weeks researching and writing a complete architectural guide on the internals of the Microsoft Fabric Warehouse, and wanted to share some key design patterns and takeaways with you. When moving from Azure Synapse Dedicated Pools or SQL Server to Fabric, the mental model shift can be challenging—especially regarding serverless execution and open-standard storage. Here is a summary of the 3 most critical findings from my architecture breakdown: 1. The Polaris Engine Mechanics Unlike traditional Dedicated SQL Pools which bind compute to VM instances, Fabric Warehouse runs on the Polaris distributed SQL engine. Query compilation is split into stateless metadata services. Compute nodes are allocated dynamically per query. There is no local page storage; instead, the engine reads and writes open-source Delta Parquet format files directly in OneLake. 2. The Reality of Constraints A common point of confusion is table constraints. Fabric Warehouse allows you to define Primary Keys, Foreign Keys, and Unique Constraints, but they are not enforced during data ingestion. They serve purely as metadata for the query optimizer (to improve join paths). You must handle data validation/enforcement upstream in your Spark/Dataflow pipelines! 3. Direct Lake & Cold Queries Power BI's Direct Lake mode is a game-changer because it bypasses the SQL endpoint and queries the Delta Parquet files directly. However, if the dataset size exceeds the F-SKU memory limits, the query falls back to DirectQuery mode. This fallback forces the engine to run SQL queries on the SQL endpoint, introducing cold-query compilation times. I have published the full 11,000-word engineering handbook covering capacity planning, monitoring DMVs, security setups (RLS/OLS), and a retail case study. If you are planning an enterprise migration or studying for the DP-600 / DP-700 exams, check out the deep dive here: 👉 Read the Microsoft Fabric Warehouse Architecture & Performance Guide Would love to hear how your teams are managing cold query compilation and metadata cache warming on Fabric SQL endpoints. Let’s discuss below!
