(4.0.5) Allowed memory size of… /wp-includes/class-http.php on line 252

try increasing memory available for php.

I increased it to 512 via the wp-config.php and nothing changed.

I have the same problem! I’ve also tried changing the memory limit in my wp-config.php with no success. I had a wordpress site running last year and this is the first time I’ve seen this error. It’s frustrating!

It very much is!

Thorsten, the resolution is that you need to copy and paste this into your /wp-includes/cache.php file just after the <?php tag:

ini_set(‘memory_limit’,’64M’); // set memory to prevent fatal errors

Mine was set to 32M, I increased it to 64M, and I instantly regained access to my site.

the resolution is that you need to copy and paste this into your /wp-includes/cache.php

Messing with the core files is not advised. For one, all your changes will be overwritten when you next update the WP.

Any core file such as /wp-includes/cache.php cannot be the root cause of your issue. It would be better if you figure the root cause of the problem and fix it.

Do you have an idea of what the problem is? I do not know how to figure out the problem.

@aiden Patrick: Your problem is site50.net. Free hosting always has issues with RAM and CPU allocation. Get a real host: see Recommended WordPress Web Hosting

I just updated manually to WordPress 4.2.2. Now I get the following message when attempting to view the dashboard:
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 30720 bytes) in /home/a4438214/public_html/wp-admin/menu.php on line 43

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 491520 bytes) in /home/a4438214/public_html/wp-includes/canonical.php on line 262

Your problem is site50.net