error with yum update - centos

Question

I'm trying to do yum update on my centos 7 server but i'm getting the following error:
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 grub2-tools which is missing some
dependency that another package requires. Yum is trying to
solve this by installing an older version of grub2-tools 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 grub2-tools.otherarch ... this should give you an error
message showing the root cause of the problem.
2. You have multiple architectures of grub2-tools 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 grub2-tools 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: 1:grub2-tools-2.02-0.64.el7.centos.x86_64 != 1:grub2-tools-2.02-0.44.el7.centos.x86_64
Can someone help me solve this?

Answer 1

I encountered the same problem, due to abnormal stop of yum update process.
I solve by removing grub2-tools and then re-install it, skipping the multilib check.
Specifically here's what I did:
[CAUTION! Use at your own risk ]
yum remove grub2-tools
yum install grub2 --setopt=protected_multilib=false
yum clean all
yum update

Answer 2

I manually download a higher version of grub2-tools (the 2.02-0.64) from
https://www.rpmfind.net/linux/rpm2html/search.php?query=grub2-tools&submit=Search+...&system=&arch=
And then I've manually installed it
rpm -ivh grub2-tools-2.02-0.64.el7.centos.x86_64.rpm
The process failed by dependencies, as it needed grub2-common at least same version (2.02-0.64), so I manually download also, and manually install bot
rpm -ivh grub2-common-2.02-0.64.el7.centos.noarch.rpm
rpm -ivh grub2-tools-2.02-0.64.el7.centos.x86_64.rpm
So the problem seems resolved.