Abstract
We study the automorphism group $\Aut{G}$ of a free product $G$ of finite cyclic groups. We investigate the question in which cases $\Aut{G}$ has Serre's property FA. In the case of two or three free factors, we prove that $\Aut{G}$ does not have property FA. However, if each free factor of $G$ occurs at least four times we show that $\Aut{G}$ does have property FA.
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