Apr '16

Yum Multilib Errors on RedHat / CentOS

If you’re trying to install or update packages via yum on a RedHat /CentOS server and you keep getting ‘Multilib’ errors along the lines of:

Protected multilib versions: openssl-1.0.1e-42.el6_7.4.x86_64 != openssl-1.0.1e-42.el6.i686

Then this means that you already have a 32bit version of a package and you’re trying to install a 64bit version (either by direct installation or as a dependency), or vice-versa. Generally these days you will be operating on a 64bit system so this issue can be very easily fixed by running the following

yum remove *.i386 *.i486 *.i586 *.i686

And then installing the 64 bit versions (these should be the defaults) of the offending packages.

I encountered this when trying to use a 64 bit CentOS image as an AWS server due to 32 bit packages being pre-installed. Good grief it took me a while to figure out!

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