Merge pull request #1012 from dangshubham/shubhamdang-PasskeySupportAmazon

Update Connect-SPOService.md

Author: garycentric

sharepoint/sharepoint-ps/Microsoft.Online.SharePoint.PowerShell/Connect-SPOService.md

@@ -218,6 +218,13 @@ Accept wildcard characters: False
 > Applicable: SharePoint Online
 
  Used to authenticate the user using the Microsoft Authentication Library (MSAL).
+> [!NOTE]
+> To avoid adding the `-UseSystemBrowser` parameter every time you run `Connect-SPOService`, you can set a registry key instead.
+>
+> Set the `UseSystemBrowser` registery key (type `REG_DWORD`) at: 
+`HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SPO\CMDLETS\`
+>
+> If either registry key is set to a non-zero integer value or `-UseSystemBrowser` parameter is set to `true`, authentication flow will use system browser for sign-in.
 
 ```yaml
 Type: System.Boolean