A Tip From Kinetic Computer Services ...
Recurring "Your mailbox has been temporarily moved" errors with Hosted Microsoft Exchange
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Description of the Problem
You are using Microsoft Outlook to connect to a hosted Exchange ("Company Hosted Exchange," or CHE) account. You repeatedly get disconnected from your mailbox. Sometimes you receive an error reading, "Your mailbox has been temporarily moved on Microsoft Exchange server." Your e-mail address appears to be changed to one ending in .outlook.com, which is not your e-mail domain. You can successfully use the widely-published workaround of removing and re-creating your Outlook profile, but this fix only lasts for a short time until the problem recurs. You have used Outlook with hosted Exchange for years without this ever happening, but now it happens regularly.
Cause
An update to Microsoft Exchange released in late 2025 changed the way it handles Autodiscover requests. To make Exchange handle Autodiscover requests correctly from Windows PCs running Microsoft Outlook, some changes must be made to the Windows registry of the PC.
Solution
Type or paste the following lines into a text editor, such as Notepad:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\AutoDiscover]
"ExcludeHttpsRootDomain"=dword:00000001
"PreferLocalXML"=dword:00000000
"ExcludeHttpRedirect"=dword:00000000
"ExcludeHttpsAutodiscoverDomain"=dword:00000001
"ExcludeScpLookup"=dword:00000001
"ExcludeSrvRecord"=dword:00000001
"ExcludeExplicitO365Endpoint"=dword:00000001
Save the file with a .reg extension, e.g. AutodiscoverFix.reg.
Before you proceeed, you will need to know how to connect your mailbox to your Hosted Exchange provider with Outlook. Refer to your Hosted Exchange provider's instructions, if necessary, and make sure you know your mailbox password.
- Open the Mail (32-bit) applet in Control Panel on the affected PC running Microsoft Outlook. Use C:\Windows\SysWOW64\control.exe mlcfg32.cpl from a command prompt or search box if you cannot find the applet.
- Delete the profile containing your Exchange account.
- Run the .reg file (such as, by double-clicking in Windows Explorer) on the affected PC.
- Start Outlook and enter the settings required to configure your mailbox.
After Outlook opens, your mailbox will be connected and will no longer suffer from the temporary mailbox issue.
Posted on February 25, 2026
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