Ignoring all the arguments about whether Microsoft was right or wrong to arbitrarily disable SMB v1 without asking users, here's a way to check SMB v1 status using PowerShell... but - once again - using AutoHotkey for ease of use, i.e. to wrap elevating the command and popping the result in a GUI:
smb_check.jpg

Code:
#SingleInstance force

; Prompt to 'Run as Admin', i.e. show UAC dialog
If Not A_IsAdmin
{
   Run *RunAs "%A_ScriptFullPath%"  ; Requires v1.0.92.01+
   ExitApp
}

clipboard= ; Clear the clipboard

psScript =
(
(Get-WindowsOptionalFeature -FeatureName SMB1Protocol -Online).State | clip
)

RunWait PowerShell.exe -Command %psScript%,, hide
MsgBox, 64, Check SMB1, SMB1 is %clipboard%
ExitApp
Hope this helps...