PL-300 Manage and secure Power BI Practice Question
You are a Power BI administrator. A user reports that they cannot refresh a dataset that connects to an on-premises SQL Server using a gateway. The dataset was previously refreshing successfully. You need to ensure that the dataset can refresh again. What should you do first?
⚠ Common exam trap
The trap here is jumping to credential or timeout issues without first verifying the gateway health, which is a common oversight.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Check the gateway cluster status and ensure the gateway is online and has the latest version.
The most likely cause of a sudden refresh failure for an on-premises data source is an issue with the gateway. Checking the gateway status is the first troubleshooting step because if the gateway is offline or outdated, the refresh will fail. Other steps like re-entering credentials or increasing timeout are secondary.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the dataset refresh timeout in the dataset settings.
Why it's wrong here
Increasing the timeout might help if the refresh is timing out due to long-running queries, but the scenario does not indicate a timeout error. The user simply cannot refresh. The first step should be to diagnose the root cause, and gateway connectivity is a common failure point. Changing the timeout without understanding the error could mask the real issue.
- ✓
Check the gateway cluster status and ensure the gateway is online and has the latest version.
Why this is correct
The first step in troubleshooting a refresh failure is to verify that the gateway is operational. If the gateway is offline or outdated, it cannot connect to the on-premises data source. Checking the gateway status in the Power BI service under 'Manage gateways' will reveal if the gateway is online and if an update is available. This is a common cause of refresh failures.
- ✗
Republish the dataset from Power BI Desktop.
Why it's wrong here
Republishing the dataset might overwrite any changes and is a drastic step that does not address the underlying cause. If the gateway is the issue, republishing will not fix it. Republishing should only be considered after other troubleshooting steps and if the dataset definition itself is corrupted, which is unlikely in this scenario.
- ✗
Re-enter the data source credentials in the dataset settings.
Why it's wrong here
While credentials can expire or be changed, it is not the first step unless you have evidence that credentials are the issue. The gateway status is a more fundamental check because if the gateway is down, credentials are irrelevant. Re-entering credentials without verifying the gateway could waste time and not resolve the issue if the gateway is the problem.
Go deeper
Related to this question
About these practice questions
One of 524 original PL-300 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This PL-300 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PL-300 exam.