Cleanup-OWARules

This PowerShell script is designed to clean up erroring OWA (Outlook Web App) rules from user mailboxes in Exchange Online. It connects to Exchange Online, retrieves all user mailboxes, identifies erroring OWA rules, and removes them.

Prerequisites

• Windows PowerShell 5.1 or later
• Exchange Online Management Module installed To install the Exchange Online Management Module, open PowerShell as an administrator and run: Install-Module -Name ExchangeOnlineManagement

Usage

1. Save the script in a file named CleanUpOWARules.ps1.
2. Open PowerShell and navigate to the directory containing the script.
3. Run the script using the command:
   .\CleanUp-OWARules.ps1

The script will prompt you for your Office 365 admin credentials. After providing the credentials, it will process each mailbox, removing erroring OWA rules.