In 1832 he fell seriously ill and withdrew from his office. Two years later he felt well enough to attempt a return to work, representing Hesse-Homburg at a ministerial conference at Vienna which Metternich had convoked, as a response to the upheavals of 1830, in order to impose an anti-democratic constitution across the German confederation. Ibell was quickly forced by his illness to return home to his home in Unterliederbach where he died a few weeks later.