Software⏱️ 2 min read📅 2026-05-31

How to Fix: Error TF30063: You are not authorized to access ... \DefaultCollection

Error TF30063: You are not authorized to access ... \ DefaultCollection

Quick Answer: Try disconnecting from TFS Preview, then reconnecting to your on-premises TFS server and try again.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. ✅ Best Solutions to Fix It
  3. 🎯 Final Words

The error TF30063 is a common issue faced by developers who switch between TFS Preview and their on-premises TFS server. This problem occurs when the TFS Preview connection is not properly disconnected, causing the credentials to remain active.

🛑 Root Causes of the Error

  • The TFS Preview connection is not properly disconnected.

✅ Best Solutions to Fix It

Method 1: Reconnect to TFS Preview

  1. Step 1: Disconnect from TFS Preview by going to Team → Disconnect TFS.

Method 2: Update Credentials

  1. Step 1: Go to Team → Options
  2. Step 2: Click on Credentials and select New.

🎯 Final Words

To avoid this issue, always disconnect from TFS Preview before switching to your on-premises TFS server.

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