WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: Server errors after upgrades, by stevendude Thank you! It doesn’t seem theme specific. I am trying to rename the .htaccess file to something like .htaccess_save or .htaccess_old but it won’t let me, says it is invalid filename. Do I need to leave out the period, and if so how would I put it back if I needed to? Reply To: Server errors after upgrades