WordPress › Support » Individual posts link to "404"

MotoM
Member
Posted 4 weeks ago #

You click on a category and a list of posts in that category appears. You can see them all, start reading them, but as soon as you click on an individual post, a 404-not found page appears where the post should be (the rest of the page/layout appears).

This just started happening today and I can't figure out why, how, or how to fix it. I thought perhaps since I was toying around with the permalinks something got messed up there, but the urls for the post pages are correct.

I can edit the post from my control panel, save it, then click on the "see post" link and it takes me to the same error page. This is only affecting all the posts in ONE category, every thing else works like it should.

EDIT**
I just tried making a new post in any category and they all show up as 404. They show up in their categories, and on the main page as new posts, but as soon as you click on the post you get the 404.
songdogtech
Member
Posted 4 weeks ago #

Reset permalinks to default and make sure .htaccess is writable and the changes get saved. Then set them to the format you want and save again.
MotoM
Member
Posted 4 weeks ago #

As I'm going through my blog I am finding more and more posts that are not working, although some still work..??

EDIT ok the only posts that are working are ones that I gave a custom permalink to by hand: domain.com/word, any posts that had the urls named automatically as /%category%/%postname%/ are not appearing
MotoM
Member
Posted 4 weeks ago #

ok, I reset the permalinks to default, and the blog posts that are on the first page are working. I can't access any of the categories however, the entire page just goes blank and does a Not Found error.

What is the .htaccess? I didn't see it as an option on the permalinks page?
Shane G
Member
Posted 4 weeks ago #

Hi,

Set your desired permalink from wordpress admin area and add this code in htaccess:

# BEGIN WordPress

<IfModule mod_rewrite.c>
ErrorDocument 404 /index.php?error=404
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

After that have a check with old and new posts. Also check with disabling the plugins and upgrade wordpress version.

Thanks,

Shane G.
MotoM
Member
Posted 4 weeks ago #

I still don't understand what/where is this htaccess. I am also running the newest version of wp, just upgraded couple days ago.
songdogtech
Member
Posted 4 weeks ago #

MotoM: The first thing to do is ignore Shane G.

Now, the .htaccess file is a normally invisible file in your WP directory. If you have WP in the top level of your webserver, it's there. If you have WP in another directory, like mydomain.com/wordpress/, it's in wordpress.

You need to use an FTP program - like Filezilla for Windows, or Cyberduck on a Mac - to "see" the file.

Either way, there's something in .htaccess that isn't working right, so reset permalinks to default in WP and then delete the .htaccess file using FTP. That should get you back in and fix the 404s for now. And then you can reset permalinks to the structure you want.

When you reset permalinks to the style you want, you'll see at the bottom of the permalinks page in WP a window that shows the code changes that have to go into .htaccess. You'll either see a note that says "If your .htaccess was writable, WordPress could save the changes." Or a note that says changes were saved.

Try that and post back with what happened.
MotoM
Member
Posted 4 weeks ago #

I set the permalinks to default, and deleted the .htaccess with ftp, then set the permalinks back to custom. Nothing changed.

If the permalinks are set to default I can read the posts, but can't access my categories, when I go with the custom structure I can't read the posts with the generated url, I can view the categories, and I can view the individual posts with custom url's.

There is no additional text on the permalinks settings page.

If it helps the site is located at: toronto dog blog dot com.
songdogtech
Member
Posted 4 weeks ago #

Something more subtle is going on. Right now, category listings in the sidebar all work, i.e. Events; but some individual posts in that category don't - http://www.torontodogblog.com/events/doggie-washathon-support-rescue/ - as well as others, I assume.

So check the permalink setting for that post in the editor, right above the text window, and see if it's correct.

If some individual post URLs are mesed up, you might have to go to the database and fix them individually.

And, post your custom permlink setting here; is it removing the category base?
MotoM
Member
Posted 4 weeks ago #

The permalink in the editor looks exactly like the post url. That's what I don't understand about this.
On some of the posts I have used a "custom permalink" plugin to shorten the url (I took out the category portion), and these are the only posts that work. eg: http://www.torontodogblog.com/soggiedog
songdogtech
Member
Posted 4 weeks ago #

That's the whole problem: I didn't know you were using a plugin.

Removing the catagory base is really an unsupported permalink structure, outlined http://wordpress.org/support/topic/155659?replies=10 and http://wordpress.org/extend/ideas/topic.php?id=359.

I'd get rid of the plugin and then you'll have to go into your database and change the URL of those posts to match your permalink structure.

If you want to get rid of the category base for a pretty permalink, use a static page.
MotoM
Member
Posted 3 weeks ago #

ok, and I did think for a bit that that plugin is some how related or a problem, but the weird thing is that the posts on which I have used this custom url are the ones that ARE working. It's the ones that WP did it's own structure automatically that are not working properly.
MotoM
Member
Posted 3 weeks ago #

I have added a new post in the mean time and that post is showing up just fine. It has the same automatic structure like all the other posts that are not working.

I'm not sure how wp actually works but is it possible that there is some sort of a problem with a database and how the information to be posted on a page represented by a url is being recalled? These posts exist some where and they show up in the dashboard and on the actual home page as the blog summary, but when the url is entered for that actual post , it some how stops existing and the information isn't recalled.

I just tried changing the url on one of the posts using the custom plugin to blog.com/1234, saved that, and the post now appears.
I then deleted the custom url and reverted back to the original post url title and saved. When I tried opening the post, the browser url window started to flash back and forth between the original url and the one I just deleted, back and forth back and forth until the session expired and the entire page went blank.

I now disabled the custom permalinks plugin and posts and categories are now working as they should. The posts which had the custom permalinks are now not working, and the post I did the trial url switch on (above) is still doing the crazy back and forth url flashing. The posts that had the custom urls in dashboard show what is the automatic url structure but when I go to open the post from the blog the browser tries to find the post based on it's old custom url. I have opened the post in the post editor and re-saved it, but in the browser the post still comes up under the old url (and doesn't work).

I've continued to try things... I went back to default permalink structure and once again deleted that .httc-something or other file. Now every thing is working perfectly.

I changed the permalink structure to custom: category/post.
Now the problem of the flip flopping url's is back! My trial post url is floping back and forth until the session expires and any of the posts I gave custom permalinks to are still being attempted to be recalled using that custom permalink even though in the dashboard post editor the links to the post appear like they should be /category/post.

I have left the blog in the default permalink setting since at least this way the blog is readable and the posts are accesible, but I would like to get this resolved as 1. there's obviously something left over from the custom permalink plugin that is messing things up in the back ground and 2. I would prefer the url's to be in the custom setting of words and not numbers.
songdogtech
Member
Posted 3 weeks ago #

I wrote last week that if some individual post URLs are mesed up, you might have to go to the database and fix them individually. I've had to do a few times in the past. Check this out on how to go through your database and find bad URLs: Changing_the_URL_directly_in_the_database « WordPress Codex
MotoM
Member
Posted 3 weeks ago #

Oh ok, when you said that I thought you were talking about the dashboard post editor. Thanks!! I will look into that! So would I be changing the url of the affected posts only to what the dashboard editor sais the url should be and once that's done I can revert to the custom permalink and all post url's will be updated accordingly?
songdogtech
Member
Posted 3 weeks ago #
Well, there are a few things to check in the database: one is the permalink structure, and the others are the URLs of the posts that don't work.

But first, since you're using default permalinks now, look in your htaccess file and delete any or all of the Wordpress rewrite blocks. They might be causing problems. Leave anything else in, like Index options or Symbolic links, but delete anything like this:
```
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
```
There might be a whole bunch of those, as you've been switching permalinks on and off again. That might fix the URL problems; check and see if it does.

If not, then back up your database with instructions Backing Up Your Database « WordPress Codex or do it with a plugin, and then look in your database wth PHPMyAdmin.

Browse to wp_options, and you'll see on the second page that option_id 34 is permalinks. That should be blank if you're using defaults. If it's not, clear that field.

Then see if the bad URLs work. If they still don't work, go back to the database and browse in wp_posts. In column GUID is the permalink for the posts and pages, and look through them and you should see some that are stuck with old custom names, etc. You can change those individually.

That should fix things, then you can change to custom permalinks.

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