Rubuta ci gaba don wannan sakin layi - Philipp von Cobenzl ya girma a Gorizia da kuma a Predjama Castle ("Burg Lueg") kusa da Postojna ("Adelsberg"). Ya shiga aikin diflomasiyyar Habsburg. A shekara ta 1777 ya raka Sarkin sarakuna Joseph II (a cikin suturar "Count Falkenstein") a ziyarar da ya kai wa 'yar uwarsa Sarauniya Marie Antoinette a Faransa. Nan da nan bayan haka, Cobenzl ya yi tafiya zuwa Berlin a matsayin jakadan Habsburg, amma bai iya hana Sarkin Prussia Frederick Mai Girma shiga cikin Yaƙin Nasara na Bavarian ba
Ka yi haƙuri. A cikin 1779 ya kammala Zaman Lafiya na Teschen kuma ya ɗauki ofishin mataimakin shugaban Austrian, wanda daga ƙarshe ya gaji Babban Jami'in Gwamnati Prince Wenzel Anton na Kaunitz-Rietberg a 1792. Koyaya, tuni a watan Maris na 1793 bayan rashin jituwa game da Raba na Biyu na Poland, dole ne ya yi murabus daga mukaminsa a madadin Baron Johann Amadeus Francis de Paula von Thugut.