Change language of a shared mailbox in Office365

If you are working in an international company you might have noticed that shared mailboxes in Office 365 have a tendency to switch language from time to time. 😜

If you need to set the language of a shared mailbox you can do it with PowerShell.

Connect to Exchange online

Run the PowerShell command, but replace the mail and language.

Set-MailboxRegionalConfiguration -Identity example@example.com -LocalizeDefaultFolderName:$true -Language en-US

That’s it!


Oh, you are speaking a different language? Perhaps ζ—₯本θͺž or EspaΓ±ol?

I am not 100% sure about all the codes for different languages. Microsoft docs say it uses codes from the RFC 4646 specification, so here are some examples:

Country and languageCode
Afrikaans – South Africaaf-ZA
Albanian – Albaniasq-AL
Arabic – Algeriaar-DZ
Arabic – Bahrainar-BH
Arabic – Egyptar-EG
Arabic – Iraqar-IQ
Arabic – Jordanar-JO
Arabic – Kuwaitar-KW
Arabic – Lebanonar-LB
Arabic – Libyaar-LY
Arabic – Moroccoar-MA
Arabic – Omanar-OM
Arabic – Qatarar-QA
Arabic – Saudi Arabiaar-SA
Arabic – Syriaar-SY
Arabic – Tunisiaar-TN
Arabic – United Arab Emiratesar-AE
Arabic – Yemenar-YE
Armenian – Armeniahy-AM
Azeri (Cyrillic) – Azerbaijanaz-AZ-Cyrl
Azeri (Latin) – Azerbaijanaz-AZ-Latn
Basque – Basqueeu-ES
Belarusian – Belarusbe-BY
Bulgarian – Bulgariabg-BG
Catalan – Catalanca-ES
Chinese (Simplified)zh-CHS
Chinese (Traditional)zh-CHT
Chinese – Chinazh-CN
Chinese – Hong Kong SARzh-HK
Chinese – Macao SARzh-MO
Chinese – Singaporezh-SG
Chinese – Taiwanzh-TW
Croatian – Croatiahr-HR
Czech – Czech Republiccs-CZ
Danish – Denmarkda-DK
Dhivehi – Maldivesdiv-MV
Dutch – Belgiumnl-BE
Dutch – The Netherlandsnl-NL
English – Australiaen-AU
English – Belizeen-BZ
English – Canadaen-CA
English – Caribbeanen-CB
English – Irelanden-IE
English – Jamaicaen-JM
English – New Zealanden-NZ
English – Philippinesen-PH
English – South Africaen-ZA
English – Trinidad and Tobagoen-TT
English – United Kingdomen-GB
English – United Statesen-US
English – Zimbabween-ZW
Estonian – Estoniaet-EE
Faroese – Faroe Islandsfo-FO
Farsi – Iranfa-IR
Finnish – Finlandfi-FI
French – Belgiumfr-BE
French – Canadafr-CA
French – Francefr-FR
French – Luxembourgfr-LU
French – Monacofr-MC
French – Switzerlandfr-CH
Galician – Galiciangl-ES
Georgian – Georgiaka-GE
German – Austriade-AT
German – Germanyde-DE
German – Liechtensteinde-LI
German – Luxembourgde-LU
German – Switzerlandde-CH
Greek – Greeceel-GR
Gujarati – Indiagu-IN
Hebrew – Israelhe-IL
Hindi – Indiahi-IN
Hungarian – Hungaryhu-HU
Icelandic – Icelandis-IS
Indonesian – Indonesiaid-ID
Italian – Italyit-IT
Italian – Switzerlandit-CH
Japanese – Japanja-JP
Kannada – Indiakn-IN
Kazakh – Kazakhstankk-KZ
Konkani – Indiakok-IN
Korean – Koreako-KR
Kyrgyz – Kyrgyzstanky-KG
Latvian – Latvialv-LV
Lithuanian – Lithuanialt-LT
Macedonian – Former Yugoslav Republic of Macedoniamk-MK
Malay – Bruneims-BN
Malay – Malaysiams-MY
Marathi – Indiamr-IN
Mongolian – Mongoliamn-MN
Norwegian (BokmΓ₯l) – Norwaynb-NO
Norwegian (Nynorsk) – Norwaynn-NO
Polish – Polandpl-PL
Portuguese – Brazilpt-BR
Portuguese – Portugalpt-PT
Punjabi – Indiapa-IN
Romanian – Romaniaro-RO
Russian – Russiaru-RU
Sanskrit – Indiasa-IN
Serbian (Cyrillic) – Serbiasr-SP-Cyrl
Serbian (Latin) – Serbiasr-SP-Latn
Slovak – Slovakiask-SK
Slovenian – Sloveniasl-SI
Spanish – Argentinaes-AR
Spanish – Boliviaes-BO
Spanish – Chilees-CL
Spanish – Colombiaes-CO
Spanish – Costa Ricaes-CR
Spanish – Dominican Republices-DO
Spanish – Ecuadores-EC
Spanish – El Salvadores-SV
Spanish – Guatemalaes-GT
Spanish – Hondurases-HN
Spanish – Mexicoes-MX
Spanish – Nicaraguaes-NI
Spanish – Panamaes-PA
Spanish – Paraguayes-PY
Spanish – Perues-PE
Spanish – Puerto Ricoes-PR
Spanish – Spaines-ES
Spanish – Uruguayes-UY
Spanish – Venezuelaes-VE
Swahili – Kenyasw-KE
Swedish – Finlandsv-FI
Swedish – Swedensv-SE
Syriac – Syriasyr-SY
Tamil – Indiata-IN
Tatar – Russiatt-RU
Telugu – Indiate-IN
Thai – Thailandth-TH
Turkish – Turkeytr-TR
Ukrainian – Ukraineuk-UA
Urdu – Pakistanur-PK
Uzbek (Cyrillic) – Uzbekistanuz-UZ-Cyrl
Uzbek (Latin) – Uzbekistanuz-UZ-Latn

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