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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 SFTP or FTP, or a file manager in your hosting account’s control panel, 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).

Also try downloading WordPress again, access your server via SFTP or FTP, or a file manager in your hosting account’s control panel, 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.

I am having the exact same issue and my client’s host, iPage, is garbage so I’m having trouble following your suggestions above. I don’t have a lot of experience with php and coding and I don’t want to do anything I can’t recover from. Can you explain how to disable the plugins if I can access the dashboard? I’ve been encountering a lot of errors and I think I have just enough knowledge to be dangerous. Last time I disabled the Akismet plugin and that resolved my problems until today when I downloaded the new version of WordPress. Don’t want to disable something critical.

To disable your plugins in the Dashboard, the only way you can do it is if you have access to the Plugins tab and the list of plugins there. If you do then you can just go down the list and disable them. If you can’t access that list, then you are forced to do it through the method I mentioned above.

i just reinstalled the wordpress and i am on the latest version 4.7

with no plugin and no themes installed, still i am having the issues ..

i contacted hostgator and they told me to scan for virus using virus scanner in cpanel and delete the infected files

then find port 80 application and cpanel and enable the port 80 and other ports which is blocked due to virus ..

after doing all this

after 30 mins its working fine now … so anyone having this issue .. make sure to virus scan and cheak port 80 in cpanel if they has blocked any port …