Sometimes, an Office 365 migration results in some mailboxes in the wrong language.
You can bulk set the language and time zone for all users in Office 365 by using these Powershell scripts:
Dont, forget to connect to Office 365 first.
get-mailbox -ResultSize unlimited | Set-MailboxRegionalConfiguration -Language -TimeZone
In the Example below we will set all mailboxes in our Office 365 Tenant to the Language Dutch (NL) and the TimeZone to W. Europe Standard Time, and change all off the default folders
Get-mailbox -ResultSize unlimited | Set-MailboxRegionalConfiguration -Language 1043 -TimeZone "W. Europe Standard Time" -LocalizeDefaultFolderName
To change the language for one user :
Set-MailboxRegionalConfiguration User@domain.nl -LocalizeDefaultFolderName
The Language ID is a number that corresponds to the correct language type.
| Language (Locale) |
Code |
| Arabic (Algeria) |
5121 |
| Arabic (Bahrain) |
15361 |
| Arabic (Egypt) |
3073 |
| Arabic (Iraq) |
2049 |
| Arabic (Jordan) |
11265 |
| Arabic (Kuwait) |
13313 |
| Arabic (Lebanon) |
12289 |
| Arabic (Libya) |
4097 |
| Arabic (Morocco) |
6145 |
| Arabic (Oman) |
8193 |
| Arabic (Qatar) |
16385 |
| Arabic (Saudi Arabia) |
1025 |
| Arabic (Syria) |
10241 |
| Arabic (Tunisia) |
7169 |
| Arabic (U.A.E.) |
14337 |
| Arabic (Yemen) |
9217 |
| Basque |
1069 |
| Bulgarian |
1026 |
| Catalan |
1027 |
| Chinese (Hong Kong) |
3076 |
| Chinese (Macau) |
5124 |
| Chinese |
2052 |
| Chinese (Singapore) |
4100 |
| Chinese (Taiwan) |
1028 |
| Croatian |
1050 |
| Czech |
1029 |
| Danish |
1030 |
| Dutch (Belgium) |
2067 |
| Dutch (Netherlands) |
1043 |
| English (Australia) |
3081 |
| English (Belize) |
10249 |
| English (Canada) |
4105 |
| English (Caribbean) |
9225 |
| English (Ireland) |
6153 |
| English (Jamaica) |
8201 |
| English (New Zealand) |
5129 |
| English (Philippines) |
13321 |
| English (South Africa) |
7177 |
| English (Trinidad) |
11273 |
| English (UK) |
2057 |
| English (United States) |
1033 |
| English (Zimbabwe) |
12297 |
| Estonian |
1061 |
| Filipino (Philippines) |
1124 |
| Finnish |
1035 |
| French (Belgium) |
2060 |
| French (Canada) |
3084 |
| French (France) |
1036 |
| French (Luxembourg) |
5132 |
| French (Monaco) |
6156 |
| French (Switzerland) |
4108 |
| German (Austria) |
3079 |
| German (Germany) |
1031 |
| German (Lichtenstein) |
5127 |
| German (Luxembourg) |
4103 |
| German (Switzerland) |
2055 |
| Greek |
1032 |
| Hebrew |
1037 |
| Hindi |
1081 |
| Hungarian |
1038 |
| Icelandic |
1039 |
| Indonesian |
1057 |
| Italian (Italy) |
1040 |
| Italian (Switzerland) |
2064 |
| Japanese |
1041 |
| Kazakh |
1087 |
| Korean |
1042 |
| Latvian |
1062 |
| Lithuanian |
1063 |
| Malay |
1086 |
| Norwegian (Bokmål) |
1044 |
| Persian |
1065 |
| Polish |
1045 |
| Portuguese (Brazil) |
1046 |
| Portuguese (Portugal) |
2070 |
| Romanian |
1048 |
| Russian |
1049 |
| Serbian (Cyrillic) |
3098 |
| Serbian (Latin) |
2074 |
| Slovak |
1051 |
| Slovenian |
1060 |
| Spanish (Argentina) |
11274 |
| Spanish (Bolivia) |
16394 |
| Spanish (Chile) |
13322 |
| Spanish (Colombia) |
9226 |
| Spanish (Costa Rica) |
5130 |
| Spanish (Dom Republic) |
7178 |
| Spanish (Ecuador) |
12298 |
| Spanish (El Salvador) |
17418 |
| Spanish (Guatemala) |
4106 |
| Spanish (Honduras) |
18442 |
| Spanish (Mexico) |
2058 |
| Spanish (Nicaragua) |
19466 |
| Spanish (Panama) |
6154 |
| Spanish (Paraguay) |
15370 |
| Spanish (Peru) |
10250 |
| Spanish (Puerto Rico) |
20490 |
| Spanish (International) |
3082 |
| Spanish (Traditional) |
1034 |
| Spanish (Uruguay) |
14346 |
| Spanish (Venezuela) |
8202 |
| Swedish (Finland) |
2077 |
| Swedish (Sweden) |
1053 |
| Thai |
1054 |
| Turkish |
1055 |
| Ukrainian |
1058 |
| Urdu |
1056 |
| Vietnamese |
1066 |
The TimeZone consists of a String (time zone). Use the value from the column of the table below:
| Index | Name of Time Zone |
| 0 | Dateline Standard Time |
| 1 | Samoa Standard Time |
| 2 | Hawaiian Standard Time |
| 3 | Alaskan Standard Time |
| 4 | Pacific Standard Time |
| 10 | Mountain Standard Time |
| 13 | Mexico Standard Time 2 |
| 15 | U.S. Mountain Standard Time |
| 20 | Central Standard Time |
| 25 | Canada Central Standard Time |
| 30 | Mexico Standard Time |
| 33 | Central America Standard Time |
| 35 | Eastern Standard Time |
| 40 | U.S. Eastern Standard Time |
| 45 | S.A. Pacific Standard Time |
| 50 | Atlantic Standard Time |
| 55 | S.A. Western Standard Time |
| 56 | Pacific S.A. Standard Time |
| 60 | Newfoundland and Labrador Standard Time |
| 65 | E. South America Standard Time |
| 70 | S.A. Eastern Standard Time |
| 73 | Greenland Standard Time |
| 75 | Mid-Atlantic Standard Time |
| 80 | Azores Standard Time |
| 83 | Cape Verde Standard Time |
| 85 | GMT Standard Time |
| 90 | Greenwich Standard Time |
| 95 | Central Europe Standard Time |
| 100 | Central European Standard Time |
| 105 | Romance Standard Time |
| 110 | W. Europe Standard Time |
| 113 | W. Central Africa Standard Time |
| 115 | E. Europe Standard Time |
| 120 | Egypt Standard Time |
| 125 | FLE Standard Time |
| 130 | GTB Standard Time |
| 135 | Israel Standard Time |
| 140 | South Africa Standard Time |
| 145 | Russian Standard Time |
| 150 | Arab Standard Time |
| 155 | E. Africa Standard Time |
| 158 | Arabic Standard Time |
| 160 | Iran Standard Time |
| 165 | Arabian Standard Time |
| 170 | Caucasus Standard Time |
| 175 | Transitional Islamic State of Afghanistan Standard Time |
| 180 | Ekaterinburg Standard Time |
| 185 | West Asia Standard Time |
| 190 | India Standard Time |
| 193 | Nepal Standard Time |
| 195 | Central Asia Standard Time |
| 200 | Sri Lanka Standard Time |
| 201 | N. Central Asia Standard Time |
| 203 | Myanmar Standard Time |
| 205 | S.E. Asia Standard Time |
| 207 | North Asia Standard Time |
| 210 | China Standard Time |
| 215 | Singapore Standard Time |
| 220 | Taipei Standard Time |
| 225 | W. Australia Standard Time |
| 227 | North Asia East Standard Time |
| 230 | Korea Standard Time |
| 235 | Tokyo Standard Time |
| 240 | Yakutsk Standard Time |
| 245 | A.U.S. Central Standard Time |
| 250 | Cen. Australia Standard Time |
| 255 | A.U.S. Eastern Standard Time |
| 260 | E. Australia Standard Time |
| 265 | Tasmania Standard Time |
| 270 | Vladivostok Standard Time |
| 275 | West Pacific Standard Time |
| 280 | Central Pacific Standard Time |
| 285 | Fiji Islands Standard Time |
| 290 | New Zealand Standard Time |
| 300 | Tonga Standard Time |
| Time zone |
| (GMT-12:00) International Date Line West |
| (GMT-11:00) Midway Island, Samoa |
| (GMT-10:00) Hawaii |
| (GMT-09:00) Alaska |
| (GMT-08:00) Pacific Time (US and Canada); Tijuana |
| (GMT-07:00) Mountain Time (US and Canada) |
| (GMT-07:00) Chihuahua, La Paz, Mazatlan |
| (GMT-07:00) Arizona |
| (GMT-06:00) Central Time (US and Canada |
| (GMT-06:00) Saskatchewan |
| (GMT-06:00) Guadalajara, Mexico City, Monterrey |
| (GMT-06:00) Central America |
| (GMT-05:00) Eastern Time (US and Canada) |
| (GMT-05:00) Indiana (East) |
| (GMT-05:00) Bogota, Lima, Quito |
| (GMT-04:00) Atlantic Time (Canada) |
| (GMT-04:00) Caracas, La Paz |
| (GMT-04:00) Santiago |
| (GMT-03:30) Newfoundland and Labrador |
| (GMT-03:00) Brasilia |
| (GMT-03:00) Buenos Aires, Georgetown |
| (GMT-03:00) Greenland |
| (GMT-02:00) Mid-Atlantic |
| (GMT-01:00) Azores |
| (GMT-01:00) Cape Verde Islands |
| (GMT) Greenwich Mean Time: Dublin, Edinburgh, Lisbon, London |
| (GMT) Casablanca, Monrovia |
| (GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague |
| (GMT+01:00) Sarajevo, Skopje, Warsaw, Zagreb |
| (GMT+01:00) Brussels, Copenhagen, Madrid, Paris |
| (GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna |
| (GMT+01:00) West Central Africa |
| (GMT+02:00) Bucharest |
| (GMT+02:00) Cairo |
| (GMT+02:00) Helsinki, Kiev, Riga, Sofia, Tallinn, Vilnius |
| (GMT+02:00) Athens, Istanbul, Minsk |
| (GMT+02:00) Jerusalem |
| (GMT+02:00) Harare, Pretoria |
| (GMT+03:00) Moscow, St. Petersburg, Volgograd |
| (GMT+03:00) Kuwait, Riyadh |
| (GMT+03:00) Nairobi |
| (GMT+03:00) Baghdad |
| (GMT+03:30) Tehran |
| (GMT+04:00) Abu Dhabi, Muscat |
| (GMT+04:00) Baku, Tbilisi, Yerevan |
| (GMT+04:30) Kabul |
| (GMT+05:00) Ekaterinburg |
| (GMT+05:00) Islamabad, Karachi, Tashkent |
| (GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi |
| (GMT+05:45) Kathmandu |
| (GMT+06:00) Astana, Dhaka |
| (GMT+06:00) Sri Jayawardenepura |
| (GMT+06:00) Almaty, Novosibirsk |
| (GMT+06:30) Yangon Rangoon |
| (GMT+07:00) Bangkok, Hanoi, Jakarta |
| (GMT+07:00) Krasnoyarsk |
| (GMT+08:00) Beijing, Chongqing, Hong Kong SAR, Urumqi |
| (GMT+08:00) Kuala Lumpur, Singapore |
| (GMT+08:00) Taipei |
| (GMT+08:00) Perth |
| (GMT+08:00) Irkutsk, Ulaanbaatar |
| (GMT+09:00) Seoul |
| (GMT+09:00) Osaka, Sapporo, Tokyo |
| (GMT+09:00) Yakutsk |
| (GMT+09:30) Darwin |
| (GMT+09:30) Adelaide |
| (GMT+10:00) Canberra, Melbourne, Sydney |
| (GMT+10:00) Brisbane |
| (GMT+10:00) Hobart |
| (GMT+10:00) Vladivostok |
| (GMT+10:00) Guam, Port Moresby |
| (GMT+11:00) Magadan, Solomon Islands, New Caledonia |
| (GMT+12:00) Fiji Islands, Kamchatka, Marshall Islands |
| (GMT+12:00) Auckland, Wellington |
| (GMT+13:00) Nuku’alofa |
