Outlook

Outlook Client Administration Scripts

PowerShell scripts and registry configurations for Outlook client management.

Modules

OWA (Outlook Web Access)

OWA configuration, folder localization, and autocomplete cache management.

Signature

Email signature deployment and management.

SMime

S/MIME certificate configuration for encrypted email.

Documentation:

• Smime.docx / Smime.pdf - S/MIME setup guide
• mapi-smime-toolkit.txt - MAPI toolkit reference

Mobile

Mobile device management and policies.

Registry Configurations

Cloud-Only User Setup

; For cloud-only users
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover]
"ExcludeScpLookup"=dword:00000001
"ExcludeHttpsRootDomain"=dword:00000001

On-Premises User Setup

; For on-premises users
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover]
"ExcludeExplicitO365Endpoint"=dword:00000001

Teams Add-in Fix

; Enable Teams Meeting add-in
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\TeamsAddin.FastConnect]
"LoadBehavior"=dword:00000003

Delegate Sent Items

; Store sent items in delegate's folder
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences]
"DelegateSentItemsStyle"=dword:00000001

Included Files

File	Description
CLoud_ONLY-user.reg	Registry for cloud-only Autodiscover
ONPREM_ONLY-USER.reg	Registry for on-premises Autodiscover
Outlook_Teams_AddIn.reg	Teams meeting add-in fix
DelegateSentItemsStyle.reg	Delegate sent items behavior
fix.ps1	General Outlook fixes
fix.smtp.ps1	SMTP address fixes
sip_fix.ps1	SIP address corrections

Common Fixes

Reset Outlook Profile via PowerShell

# Remove cached credentials
cmdkey /delete:MicrosoftOffice16_Data:SSPI

# Clear Outlook autocomplete cache
Remove-Item "$env:LOCALAPPDATA\Microsoft\Outlook\RoamCache\*" -Force

Recreate OST File

# Close Outlook first
Get-Process outlook -ErrorAction SilentlyContinue | Stop-Process -Force
Start-Sleep -Seconds 2

# Remove OST (will be recreated)
Get-ChildItem "$env:LOCALAPPDATA\Microsoft\Outlook\*.ost" | Remove-Item -Force