Hello, Same scenario on Mageia 6, x86_64 It is something related to the librariers. (dunno whom or which) I have a HP ProLiant DL380 G7 that does the same (VBoxAuth does not work, but unll auth works) But on an Asus X550CC laptop, VBoxAuth works just fine. (same .rpm packages) [root@s1hp ~]# rpm -qa 'virtualbox' phpvirtualbox-vboxtool-5.2-0.mga6 virtualbox-kernel-4.9.35-desktop-1.mga6-5.1.22-20.mga6 virtualbox-5.1.22-1.mga6 virtualbox-doc-5.1.22-1.mga6 phpvirtualbox-5.2-0.mga6 [root@s1hp ~]# [root@asus_yatebts...