When I try yum install gcc-c++, I get this error message at the end. Is it safe to continue trying to install gcc-c++? Error: Package: libstdc++-devel-4.8.5-28.el7.x86_64 (base) Requires: libstdc++(x86-64) = 4.8.5-28.el7 Installed: libstdc++-4.8.5-28.el7_5.1.x86_64 (installed) libstdc++(x86-64) = 4.8.5-28.el7_5.1 Available: libstdc++-4.8.5-28.el7.x86_64 (base) libstdc++(x86-64) = 4.8.5-28.el7 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest