Policy
Disable Internationalized Domain Names (IDN) in Outlook
Microsoft Office
Policy overview
Key metadata and intent for this policy.
By default, Outlook supports Internationalized Domain Names (IDN) for SMTP addresses in Outlook if Windows provides the appropriate support for this feature. You can disable IDN support so that Punycode rather than native characters are used for rendering SMTP addresses. You might choose to disable IDN support in Outlook if you do not typically expect non-ASCII characters in SMTP addresses. This setting does not affect the support of IDN in URLs.
Internal name
L_DisableInternationalizedDomainNamesIDNinOutlook
Policy ID
e523d6e0486d
Elements
0
Registry values
How enabled and disabled states update the registry.
| Scope | Registry location | Type | Enabled value | Disabled value | Copy |
|---|---|---|---|---|---|
| User | Path software\policies\microsoft\office\16.0\outlook\options\general Value name disableidn | REG_DWORD | HKCU 1 | HKCU 0 |
Registry location
Path
software\policies\microsoft\office\16.0\outlook\options\general
Value name
disableidn
Hive
HKCU
Enabled value
1
Disabled value
0
Policy elements
Inputs and configuration options exposed by this policy.
This policy has no additional user input fields.