AutoHotkey Script to Get Main Microsoft Teams Window

Teams_GetMainWindow.ahk

Teams_GetMainWindow(){
; See implementation explanations here: https://tdalon.blogspot.com/get-teams-window-ahk
; Syntax: hWnd := Teams_GetMainWindow()

WinGet, WinCount, Count, ahk_exe Teams.exe

If (WinCount = 0)
    GoTo, StartTeams

If (WinCount = 1) {
    TeamsMainWinId := WinExist("ahk_exe Teams.exe")
    return TeamsMainWinId
}

; Get main window via Acc Window Object Name
WinGet, id, List,ahk_exe Teams.exe
Loop, %id%
{
    hWnd := id%A_Index%
    oAcc := Acc_Get("Object","4",0,"ahk_id " hWnd)
    sName := oAcc.accName(0)
    If RegExMatch(sName,".* \| Microsoft Teams, Main Window$") {
        return hWnd
    }
}

; Fallback solution with minimize all window and run exe
If WinActive("ahk_exe Teams.exe") {
    GroupAdd, TeamsGroup, ahk_exe Teams.exe
    WinMinimize, ahk_group  TeamsGroup
} 

StartTeams: 
fTeamsExe = C:\Users\%A_UserName%\AppData\Local\Microsoft\Teams\current\Teams.exe
If !FileExist(fTeamsExe) {
    return
}

Run, %fTeamsExe%
WinWaitActive, ahk_exe Teams.exe
TeamsMainWinId := WinExist("A")
PowerTools_RegWrite("TeamsMainWinId",TeamsMainWinId)
return TeamsMainWinId

} ; eofun

See implementation explanation in this blog post: Get Teams Window Autohotkey
This is implemented in the PowerTools Teamsy and Teams Shortcuts