Just to be sure, try manually resetting your plugins (no Dashboard access required). If that resolves the issue, reactivate each one individually until you find the cause.
If that does not resolve the issue, access your server via FTP or SFTP, navigate to /wp-content/themes/ and rename the directory of your currently active theme. This will force the default theme to activate and hopefully rule-out a theme-specific issue (theme functions can interfere like plugins).
If those don’t work, try downloading WordPress again and delete then replace your copies of everything except the wp-config.php file and the /wp-content/ directory with fresh copies from the download. This will effectively replace all of your core files without damaging your content and settings. Some uploaders tend to be unreliable when overwriting files, so don’t forget to delete the original files before replacing them.
Hi James,
I have tried every step you mentioned, accept for the last one.
Can you helpt me through this one step by step? How do I sace my files, my themes before downloading wordpress again? How do I delete wordpress?
kind regards Maria
You’ll do the deletion and replacing as directed above via either FTP or SFTP, what you used to rename the theme and plugin directories before.
You can back everything up first following this guide, but if you do the replacement as directed above, you won’t lose any of your content, themes, or settings: https://codex.wordpress.org/WordPress_Backups
I made a back up. and upgraded wordpress to 4.0, but still a blank page, I cant access my wp-admin either.
Should I just delete wordpress completely?
Did you delete the files (except wp-config.php and everything under /wp-content/) as directed before uploading the new copies?
