Even though his denazification process remained incomplete, Franz Langoth was also active for the nationalist cause during the Second Republic.

He retained contacts with leading NS officials and advised them on the foundation of a new party. Langoth was appointed an honorary member of the "Verband der Unabhängigen" (VdU - Association of Independents), which offered vehement opposition to the denazification laws and distinguished itself by playing down the nature of National Socialist ideology.

With his memoirs "Kampf um Österreich" (The Fight for Austria), published in 1951, Langoth clearly showed that he was an incorrigible National Socialist.