Change the language of some - or all - Sharepoint Online sites

tcboeira 

Hi

I totally understood, I was in the same situation.

For the site

First work around, you can remove all display language and select only portuguese

For the mailbox,

that could be changed for your user.

You need an exchange admin right, you connect to powershell and you adapt it

Get-Mailbox <UPN> | Get-MailboxRegionalConfiguration |Set-MailboxRegionalConfiguration -Language en-BE

Adapt the upn and the language code ( probably then "pt-br"

You can also change some regional setting like the date format

Get-Mailbox <UPN> | Get-MailboxRegionalConfiguration |Set-MailboxRegionalConfiguration -DateFormat "dd/MM/yyyy"

You can do a loop then to change it in batch

For onedrive

In my case, i've added a alternate display language

I've connected with SPO service

Then I grant myself site collection administrator role

Set-SPOUser -Site "<url of onedrive space>" -LoginName "<my own UPN>" -IsSiteCollectionAdmin $true

I create a CSV file with all the url of onedrive site (one column)

Then I run the script:

Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
 
#Authenticate to Site
 
$Username = Read-Host -Prompt "Please enter your username"
 
$Password = Read-Host -Prompt "Please enter your password" -AsSecureString
 
$site1 = import-csv -Path "<path of file>\book1.csv"
foreach($column in $site1) {
$site = $column.site
$Context = New-Object Microsoft.SharePoint.Client.ClientContext($Site)
$Creds = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Username,$Password) 
$Context.Credentials = $Creds
 
$web = $Context.Web
 
$Context.Load($web)
$Context.ExecuteQuery()
# please refer to https://technet.microsoft.com/en-us/library/cc287874(v=office.12).aspx for all locale Ids
$web.IsMultilingual=$true
$web.AddSupportedUILanguage(1033)
$Context.Web.Update()
 
$Context.ExecuteQuery()
 
}

Don,t forgot to remove the site collection admin right after (replace true by false)

The script was not done by me, i adapt it but i don't remenber the source...

This is several steps i've implemented to adapt a bit 2 year ago