Disable yum transaction check for file conflict

Replacing files from another RPM package is bad idea in most cases and I strongly advise against what you're trying to do. That said, apply following at your own risk.

Yum does not provide an option to install conflicting files, I think. However, that does not prevent you from installing a RPM package with rpm(1) which does provide an option to override existing files from another package, namely --replacefiles.

So, first get the RPM of the package you want to install on a local filesystem (/usr/local/xenco... makes me suspect that is the case already). Next install the RPM with rpm -i --replacefiles <your_rpm_file>.

This method worked for me, when I faced similar issue

Simply get the existing package with below command

rpm -qa | grep xenco

Remove those conflicting package with

yum remove packageNameFromTheList

what i always do is remove the package that is on the right hand side. In your case it would be -

yum remove xenco-server-1.9.6-104.x86_64

yum remove <> can work with any package error, i have encountered many such transactions errors when working on vm on cloud, i always remove the package that causes conflicts and always has worked for me.