SharePoint.ps1
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<#
.SYNOPSIS Resolves the Office 365 Tenant Id of a given Office 365 Tenant Name .DESCRIPTION Resolves the Office 365 Tenant Id of a given Office 365 Tenant Name. No need to specify the *.onmicrosoft.com extension but will work nonetheless if specified. Will throw if the Tenant Name does not exists! .LINK Nexus Innovations : http://www.nexusinno.com #> function global:Resolve-TenantId { [CmdletBinding()] Param ( [Parameter(Mandatory=$true)] [string]$Office365TenantName ) Write-Verbose "[Resolve-TenantId] Entering function scope" $sanitizedTenantName = $Office365TenantName.Split('.') | Select-Object -First 1 $uri = "https://login.windows.net/$sanitizedTenantName.onmicrosoft.com/.well-known/openid-configuration" Write-Verbose "Making (GET) request to $uri" $json = Invoke-WebRequest -Uri $uri | ConvertFrom-Json Write-Verbose "Matching tenant id from returned json object" $guidPattern = "({){0,1}[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}(}){0,1}"; $json.authorization_endpoint -match $guidPattern | Out-Null return $Matches[0] } |