Possible Solutions:
Solution 1:
Disable all the Plugins and have a check with upgrade because other active plugins may affect in upgrade.
Solution 2:
- Download and install this plugin manually:
http://wordpress.org/extend/plugins/core-control/
- Once you have activated this plugin from wordpress admin area, Load the “Core Control” settings page and activate the “HTTP Module”.
- Go to the new tab fore the “HTTP Module” and test CURL. You will most likely receive the following error message:
“An Error has occured: name lookup timed out”
- Now click the “Disable Transport” link in for CURL. You should now be able install/upgrade plugins and wordpress updates.
That’s it!
Thanks,
Shane G.
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