Exchange Server troubleshooting

This library of articles provides guidance to troubleshoot and fix errors that you may experience when using Exchange Server. For a complete list of articles, browse the navigation pane on the left, or use the search box above the pane to filter by keywords and find help with a specific issue.

Administration

How-To Guide

• "The term New-Mailbox is not recognized" error
• 400 Bad Request when accessing the Options page
• 403 Forbidden when viewing cross-forest free/busy information

Client Connectivity

How-To Guide

• "Insecure connection" error in Outlook for iOS or Android
• "The connection to your mail server timed out" error in Outlook for iOS or Outlook for Android
• "You've exceeded the storage limit for your mailbox" error

Compliance

How-To Guide

• Audit Log searches fail with ErrorInvalidServerVersion
• Content index state is stuck in crawling
• Error when doing a multi-mailbox search

Development

How-To Guide

• Develop apps via Exchange PowerShell and .NET Framework
• Support limitations for open standards

Distribution Lists

How-To Guide

• Get-DistributionGroupMember not return all members

Mail flow

How-To Guide

• 451 4.4.0 DNS query failed
• 554 5.4.14 Hop count exceeded
• Apps for Outlook 2013 can't activate in email
• Assertion Failed when editing a transport rule