[SOLVED] Error "yum update" - Centos 7

Issue

When I tried use "yum update" I get these message:

Error:  Multilib version problems found. This often means that the root
   cause is something else and multilib version checking is just
   pointing out that there is a problem. Eg.:

     1. You have an upgrade for libstdc++ which is missing some
        dependency that another package requires. Yum is trying to
        solve this by installing an older version of libstdc++ of the
        different architecture. If you exclude the bad architecture
        yum will tell you what the root cause is (which package
        requires what). You can try redoing the upgrade with
        --exclude libstdc++.otherarch ... this should give you an error
        message showing the root cause of the problem.

     2. You have multiple architectures of libstdc++ installed, but
        yum can only see an upgrade for one of those architectures.
        If you don't want/need both architectures anymore then you
        can remove the one with the missing update and everything
        will work.

     3. You have duplicate versions of libstdc++ installed already.
        You can use "yum check" to get yum show these errors.

   ...you can also use --setopt=protected_multilib=false to remove
   this checking, however this is almost never the correct thing to
   do as something else is very likely to go wrong (often causing
   much more problems).

   Protected multilib versions: libstdc++-4.8.5-16.el7_4.1.i686 != libstdc++-4.8.5-16.el7.x86_64
   Error: Protected multilib versions: libgcc-4.8.5-16.el7_4.1.i686 != libgcc-4.8.5-16.el7.x86_64
   Error: Protected multilib versions: glibc-2.17-196.el7_4.2.i686 != glibc-2.17-196.el7.x86_64

Before this happened I had executed yum update but it never ended and I killed the pid of a stuck yum update with this command:

kill -9 2514

Solution

Try:

rpm --erase --nodeps libstdc++
yum install libstdc++

You need not re-install libstdc++.

Source: https://ask.fedoraproject.org/en/question/37518/cant-install-some-packages-yum-fails-with-multilib-error/

[EDIT]

For Error: ... Specifies Multiple Packages:

rpm -qa | grep -iE "libstdc++" 

Here you must get multiple entries of libstdc++, then do:

rpm -e --allmatches libstdc++-4.8.5-16.el7 --nodeps

Do this recursively to resolve all the issues.

Source: https://ximunix.blogspot.in/2012/01/how-to-remove-packages-with-rpm-error.html

Answered By - Ganesh Kathiresan

Answer Checked By - Candace Johnson (WPSolving Volunteer)