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I have a new install of Centos 6.3 64 bit and receive this error when I try to do a yum erase of any httpd.

Could not retrieve the mirrorlist error was 14: PYCURL ERROR 77 - "Problem with the SSL CA Cert (path? access rights?)" Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again.

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Are you behind a firewall? – ewwhite Jan 25 '13 at 19:00
Have you done any basic troubleshooting like verifying network settings are correct, you can ping the gateway, you can resolve, you can ping the external IP? I would post the output of the following commands: ip addr, ip route, ping – Andy Shinn Jan 25 '13 at 19:13
Look at this RedHat issue. Seems similar.… – JakeGould May 13 '14 at 4:11

it is possible your /etc/pki/tls/certs/ is messed up. Back up all files in there first, and then download new certificate bundle, as described here:

curl -o /etc/pki/tls/certs/ca-bundle.crt
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...and once yum works again, reinstall the ca-certificates package. – Dennis Kaarsemaker Jan 25 '13 at 22:00

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