Software⏱️ 4 min read📅 2026-06-15

How to Fix: CFURLCreateWithString error from outlook on OSX Lion

Outlook 2011 for Mac slow performance and CFURLCreateWithString error on OSX Lion.

Quick Answer: Check if Outlook is using a file system path instead of an URL string, try using CFURLCreateWithFileSystemPath or CFURLCreateWithFileSystemPathRelativeToBase.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🔧 Proven Troubleshooting Steps
  3. ✨ Wrapping Up

The error 'CFURLCreateWithString' in Outlook 2011 on OSX Lion indicates that there is an issue with the URL string used by the application. This error affects users who have upgraded to OSX Lion and are experiencing slow performance from their Outlook 2011 application.

This error can be frustrating for users, especially when they need to access certain features or functions of Outlook 2011 without any issues. In this guide, we will explore the possible causes of this error and provide two primary fix methods to resolve the issue.

💡 Why You Are Getting This Error

  • The primary cause of this error is that the URL string used by Outlook 2011 on OSX Lion contains a file system path instead of an actual URL string. This can happen when the application tries to access the Exchange server using a file system path, which is not a valid way to connect to the server.
  • An alternative reason for this error could be that there are issues with the configuration or settings of Outlook 2011 on OSX Lion, such as incorrect registry entries or corrupted system files.

🔧 Proven Troubleshooting Steps

Method to resolve the issue by modifying the URL string

  1. Step 1: Step 1: Open Outlook 2011 and go to the 'File' menu. Click on 'Account Settings' and select the account you want to modify. In the 'Account Settings' window, click on the 'Change' button next to the 'Exchange Server' section.
  2. Step 2: Step 2: In the 'Exchange Server' window, click on the 'Edit' button next to the 'URL' field. This will open a new window where you can enter the correct URL string for your Exchange server.
  3. Step 3: Step 3: Enter the correct URL string in the format 'https:///EWS/Exchange.asmx'. Replace '' with the actual name of your Exchange server. Click 'OK' to save the changes.

Alternative method to resolve the issue by resetting Outlook settings

  1. Step 1: Step 1: Quit Outlook 2011 and open the Terminal application on OSX Lion. Type the command 'sudo rm -rf ~/Library/Application\Support/Outlook' and press Enter to delete the outdated support files.
  2. Step 2: Step 2: Restart Outlook 2011 by clicking on its icon in the Dock or by typing the command 'outlook' in the Terminal application. This will reset the application's settings to their default values.

✨ Wrapping Up

In conclusion, the error 'CFURLCreateWithString' in Outlook 2011 on OSX Lion can be resolved by modifying the URL string used by the application or by resetting the application's settings. By following these steps, users should be able to resolve the issue and enjoy a faster and more stable Outlook experience.

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