WordPress 2.7 upgrade protocol

Copy the entire site – including the complete wp-content and the data base – to a local server and run a test. There is no other way to know if it works. Usually you can run the automatic upgrade from any version of WordPress. Outdated themes and plugins are not safe.

Upgrade to 3.3.2 return a blank admin page

Are you sure your host has the minimum versions of php and mysql for 3.3.2? They are PHP version 5.2.4 or greater MySQL version 5.0 or greater. And: try renaming the plugins folder to old_plugins and see if admin works.

WordPress automatic update error. Download failed : SSL certificate problem: unable to get local issuer certificate, “Installation Failed”

This error indicates that your SSL certificate has either expired or is corrupted. I came across this error recently on a local WordPress installation and the solution is as follows: Download the latest cert.pem file from https://curl.haxx.se/docs/caextract.html Save this file (called cacert.pem) in your php installation directory Open php.ini in an editor and search for … Read more

Why does WordPress 4.1 have an auto-update entry in wp_options?

The “autoupdate” value you see there is just a string in the “response” field from the version check API call. It doesn’t determine whether or not your site actually performs an autoupdate. You’ll see that field in every response returned from core version checks. Basically, it’s just saying that a potential autoupdate is available for … Read more

Is WordPress 4.0 a Major update?

WordPress 4.0 is not a major update, at least referencing the scheme {major}.{minor}.{patch}. However, WordPress version numbering is explained here, and major versions are identified by the first two numbers, e.g. some recent major versions were 3.7, 3.8, 3.9, 4.0, and 4.1 coming in December 2014. WordPress noted in the release post, “4.0 is just … Read more