Title: Plugin Upload Fails Last modified: February 27, 2017 --- # Plugin Upload Fails * Resolved [grysom](https://wordpress.org/support/users/grysom/) * (@grysom) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/) * Hello, * I’ve just encountered a very strange issue when trying to upload a plugin via WordPress. * I went to Plugins > Add New > Upload. Selected a zip file (containing a folder with plugin files). When I hit Install, I got redirected to /wp-admin/update. php?action=upload-plugin but was shown (to my surprise) just a regular Error 404 – Page Not Found. * I tried – switching all the plugins off – switching to basic theme – replacing all the files (except wp-content and wp-config.php) – checking file properties– switching off pretty links * When I disabled pretty links, the only result was that instead of being taken to Error page, I received the message “Are you sure you want to do this?” * I experienced this issue on two websites: – notjusttourist.com – dev.notjusttourist. com * I did all the attempts on the dev site, for obvious reasons. * When I tried installing a plugin via the backend search, it worked just fine. However, the plugin I tried to install was WooCommerce Cart Add-ons. This one is paid so I can’t install it with the search interface. * When I tried uploading a plugin to FTP manually, it didn’t show up on the list of plugins afterwards. * Please note: I’m not the one who built the site so its structure is pretty much unknown to me. That’s partly what makes it difficult to investigate the issue further. * At this point, I’m afraid I’m out of ideas and short of deeper knowledge. So, do you have any suggestion, folks? * Thank you in advance for sharing your tips! * Have a nice day Matěj Viewing 10 replies - 1 through 10 (of 10 total) * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8854327) * Have you considered installing plugins manually?: [https://codex.wordpress.org/Managing_Plugins#Manual_Plugin_Installation](https://codex.wordpress.org/Managing_Plugins#Manual_Plugin_Installation) * Thread Starter [grysom](https://wordpress.org/support/users/grysom/) * (@grysom) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8854495) * Thanks for the effort, but as I wrote: * > When I tried uploading a plugin to FTP manually, it didn’t show up on the > list of plugins afterwards. * So, yes… - This reply was modified 9 years, 3 months ago by [grysom](https://wordpress.org/support/users/grysom/). * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8854575) * Sorry, I missed that. * > it didn’t show up on the list of plugins afterwards. * It did not show up in the dashboard or in the FTP …? - This reply was modified 9 years, 3 months ago by [t-p](https://wordpress.org/support/users/t-p/). * Thread Starter [grysom](https://wordpress.org/support/users/grysom/) * (@grysom) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8855750) * It didn’t show up in the dashboard. * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8857921) * Have you tried: – flushing any caching plugins you might be running, as well as server and/or [browser caches](http://www.refreshyourcache.com/). Not just your browser, but any op cache or content network cache as well [such as Cloudflare](https://support.cloudflare.com/hc/en-us/articles/200169246-How-do-I-purge-my-cache-). If your host provider has a “Purge Varnish” option or if you can ask your provider to flush memcache on your server. If you are using SiteLock, manage your caching there. * Thread Starter [grysom](https://wordpress.org/support/users/grysom/) * (@grysom) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8858116) * Thank you for your reply. * I’ll try to do that, let you know when I’m done. 🙂 * Have a nice day Matěj * Thread Starter [grysom](https://wordpress.org/support/users/grysom/) * (@grysom) * [9 years, 3 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8861031) * Okay, so I checked the site and the server – I wasn’t able to find any cache plugin, also there is no Cloudflare involved and I’m not aware of using any other services/technologies like that. * Perhaps there are some but I didn’t build the site, I just help to rebuild it, so I don’t really know the structure and infrastructure involved. * Is there a way to find out what cache tools/services the site uses? * Thank you for advice. * Have a nice day Matěj * Thread Starter [grysom](https://wordpress.org/support/users/grysom/) * (@grysom) * [9 years, 2 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8878797) * Hey, * the mystery has come to a conclusion. The upload function was blocked by the server provider due to security reasons. I had to contact the support, explain the situation and send them the file to check for malware in order to get it unblocked. * So if anyone else have those strange issues I recommend checking security restrictions with the hosting support. * Have a nice day Matěj * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [9 years, 2 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-8881427) * Glad to know it 🙂 * [nodwsp](https://wordpress.org/support/users/nodwsp/) * (@nodwsp) * [8 years, 10 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-9346734) * Flushing cache worked for me (I hate cache plugins!) Viewing 10 replies - 1 through 10 (of 10 total) The topic ‘Plugin Upload Fails’ is closed to new replies. ## Tags * [Failed](https://wordpress.org/support/topic-tag/failed/) * [upload](https://wordpress.org/support/topic-tag/upload/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 10 replies * 3 participants * Last reply from: [nodwsp](https://wordpress.org/support/users/nodwsp/) * Last activity: [8 years, 10 months ago](https://wordpress.org/support/topic/plugin-upload-fails/#post-9346734) * Status: resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics