Hi all, first post, so go easy on me please!
I installed a security plugin (BulletProof Security) which required that I enable permalinks on my site- I was just using the defaults.
Having activated the permalinks, and the plugin all seemed well until later when I tried to login.
I could get the WordPress login screen at /wp-login.php , and it seemed to take me to my site http://www.mcoptom.ie - the admin bar was visible, but when I clicked on dashboard or any any other links the website name, I got a 404 error. I have a custom 404 page, (using infocus by mysitemyway).
I got back in by renaming the .htaccess file, and unistalled the plugin, but no change. Having then reset the .htaccess file back to the proper name, I still couldn't get in, until I changed the permalink structure back to default. Then all is well.
The required code was added to the htaccess file, and it is writeable at 644 permissions. I did also see a link which advised to put the 404 Document Redirect in with the wordpress code at the second line from the top the #Begin WordPress section of the htaccess file. That didn't work for me.
I have had to leave the permalinks at the default, and it works fine now. If it matters my wp-Admin folder is protected with a passwords file, as recommended, and I note that there is no request to authenticate when trying to get to the dashboard- perhaps it is that file that is not found?
If anyone could give me a pointer I would be really grateful, I did search about this but couldn't find anything that would work for me.