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Power BI problems — answered in plain language

Start with the pain-point guides: what broke, why it broke, how to fix it, and when to stop guessing. Then go deeper in the full article library.

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Pain-point guides

Optimized for clear answers and practical next steps — not a wall of jargon.

Power BI Refresh Failing? Here's How to Fix It

Power BI refresh failing is usually caused by expired credentials, an offline on-premises gateway, query timeouts, or a source schema change. Check gateway status and credentials first, then open the refresh history for the exact error, fix the failing query or source permission, and republish. Persistent failures need model and gateway architecture review.

  • Refresh history shows Failed right before the meeting.
  • It worked yesterday; nothing “changed” (someone rotated a password).
Read the full guide

Power BI Report Running Slow — Causes & Fixes

A Power BI report running slow usually comes from too many visuals, inefficient DAX, a large imported model, or bidirectional relationships. Reduce visual density, replace heavy measures, review the model size in DAX Studio or VertiPaq Analyzer, and simplify relationships. If pages still lag after basic cleanup, the semantic model needs redesign.

  • Slicers take seconds; pages feel stuck.
  • One page is fine; another with more charts crawls.
Read the full guide

Power BI Data Model Optimization: A Practical Guide

Power BI data model optimization starts by removing unused columns, reducing high-cardinality text fields, star-scheming facts and dimensions, and pushing transformations upstream. Then review relationships, measure complexity, and refresh design. A lean model refreshes faster, responds quicker, and is easier to govern across teams.

  • Refresh takes hours and keeps growing.
  • Nobody knows which columns the reports actually use.
Read the full guide

Migrate Excel to Power BI — Step-by-Step

To migrate Excel to Power BI successfully, inventory the workbooks, extract the real KPI definitions, connect to systems of record where possible, rebuild transformations in Power Query, and create a governed semantic model before designing pages. Do not paste spreadsheets into Power BI and call it done—redesign ownership, refresh, and security with the migration.

  • Broken links and #REF! before every close.
  • Two people “fixed” the file and created two truths.
Read the full guide

Power BI Row-Level Security Setup Explained

Power BI row-level security setup works by defining roles with DAX filters, publishing the model, and assigning users or groups to those roles in the service. Test with “View as” before go-live. Failures usually come from mismatched keys, missing group assignments, or filters that conflict with bidirectional relationships.

  • Someone sees another region’s numbers.
  • A user gets a blank report after login.
Read the full guide

Connect Power BI to SQL Server — Practical Guide

To connect Power BI to SQL Server, choose Import or DirectQuery, configure a least-privilege SQL login or Azure AD identity, and use an on-premises data gateway when the database is not publicly reachable. Then build a star schema view layer for reporting. Most connection failures are authentication, firewall, or gateway configuration—not Power BI itself.

  • Desktop connects; the service cannot refresh.
  • Order entry slows when the dashboard opens.
Read the full guide
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