Can't create sharepoint folder with non ascii character in the name

[pvagner]

I am on linux with Powershel 7.3 and Microsoft Graph SDK 1.20.

When creating folder the non accented letters get changed to something else and I am unable to figure it out.

$params = @{
    "name" = "Foldér"
    "folder" = @{}
    "@microsoft.graph.conflictBehavior" = "rename"
}
$NewFolder = Invoke-MgGraphRequest -Uri "https://graph.microsoft.com/v1.0/groups/$($newGroup.id)/drive/items/root/children" -Method POST -Body $params
$params.name
Foldér
$newFolder.name
Fold�r

[peombwa]

is the same behavior reproducible when calling the API directly through Graph Explorer? If so, please open a question/ticket at https://developer.microsoft.com/en-us/graph/support as this is a service issue. Otherwise, please share the -Debug output of the command.

[peombwa]

The issue is due to how Invoke-MgGraphRequest serializes the request body. We will review and provide a patch in our upcoming releases. See -DeBug output:

➜ $NewFolder = Invoke-MgGraphRequest -Uri "https://graph.microsoft.com/v1.0/groups/003565e9-11d7-4c35-a5cc-c6d0a2c90a2d/drive/items/root/children" -Method POST -Body $params -Debug
VERBOSE: POST https://graph.microsoft.com/v1.0/groups/003565e9-11d7-4c35-a5cc-c6d0a2c90a2d/drive/items/root/children with 74-byte payload

Confirm
Continue with this operation?
[Y] Yes  [A] Yes to All  [H] Halt Command  [S] Suspend  [?] Help (default is "Y"): A
DEBUG: POST /v1.0/groups/003565e9-11d7-4c35-a5cc-c6d0a2c90a2d/drive/items/root/children HTTP/1.1
HTTP: graph.microsoft.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Microsoft Windows 10.0.22621; en-US) PowerShell/7.3.1 Invoke-MgGraphRequest
Content-Length: 74
Content-Type: application/json

{"folder":{},"name":"Fold�r","@microsoft.graph.conflictBehavior":"rename"}