You try to upload an image or update a plugin, but WordPress displays an error. You search for a solution and find advice about changing “file permissions.” What does that mean—and should you change them?
File permissions control access to files and folders on your hosting server. Incorrect settings can interfere with website tasks, but they are only one possible cause of upload and update errors.
Before changing anything, identify the error and check your hosting provider’s recommendations. This guide will help you understand the terminology and take a sensible next step.
What are WordPress file permissions?
Your website contains files for WordPress itself, your themes, plugins and uploaded media. The server uses permissions to control who can read or change them.
These permissions apply to server accounts. They are separate from WordPress roles such as Administrator, Editor and Author.
You may encounter three types of access:
- Read: permission to read a file or list a folder’s contents.
- Write: permission to modify a file or change a folder’s contents.
- Execute: permission to run a file as a program; for a folder, it allows traversal—accessing items inside it.
This article focuses on the numeric settings commonly used on Linux hosting. Windows hosting uses a different permissions system.
What do 644 and 755 mean?
The three digits describe access for the owner, the group and other server users.
Two common settings are:
| Setting | Common use | What it allows |
|---|---|---|
| 644 | Files | The owner can read and write. The group and others can read. |
| 755 | Folders | The owner can read, write and traverse. The group and others can read and traverse. |
Treat these as common examples, not instructions to reset your website. The correct settings depend on your host’s configuration and file ownership. The WordPress permissions guide explains why requirements vary between hosting environments.
Why ownership matters too
WordPress runs through PHP, which operates with server account permissions. A file can have a familiar permission number and still be inaccessible to the process that needs it.
For example, an upload folder might belong to a different account after a migration. Changing its permission number alone may not resolve the mismatch.
Ask your hosting provider to check ownership and permissions together. PHP’s documentation explains how server permissions govern filesystem access.
What should you do when an upload or update fails?
You do not need to become a server administrator to report the problem effectively. Start with this checklist.
1. Record the exact error
Copy the error message and note what you were doing when it appeared. Include any file or folder path mentioned.
For example: “Uploading an image produces an error saying WordPress cannot create a directory inside the uploads folder.”
Do not send passwords, database credentials or the contents of private configuration files.
2. Mention recent changes
Tell your host if the problem started after a migration, backup restore, hosting change or failed update. That context can help narrow the investigation.
3. Ask for a diagnosis before changing permissions
Request checks of the affected path, ownership, permissions, available storage and relevant server logs.
An unsuccessful upload does not automatically mean that permissions are wrong. Avoid changing settings simply because an online tutorial describes a similar symptom.
4. Prepare a way back
Before making changes, confirm that a usable backup exists. Record the current permissions and ownership as well: a content backup may not preserve or restore that server information.
Ask how the change will be reversed if it causes another problem.
5. Make a targeted change and test it
Have your host identify the specific file or folder that needs attention. Avoid applying the same setting to every item on the website.
After the fix, repeat the failed task and check that the public website and dashboard still work.
If you use a hosting file manager, you may be able to inspect permissions yourself. Ask support to confirm the required values before saving changes.
Should you use 777 to make an error disappear?
No—do not use it as a routine troubleshooting shortcut.
777 grants read, write and execute access to all three account classes. WordPress warns against using it as a workaround, including for upload folders. If a feature appears to require it, ask your host to investigate the underlying access problem. See the WordPress guidance on permissions.
Does wp-config.php need special protection?
Yes. This file contains sensitive configuration, including database connection details.
WordPress discusses restrictive settings such as 400 or 440, but the correct choice must still allow the required server process to read the file. Ask your host to confirm the setting for your installation. Making the file unreadable can stop the website working. See Hardening WordPress.
Avoid copying server-access rules from an unrelated tutorial. Filesystem permissions and web-server rules serve different purposes, and your host should confirm how sensitive files are protected.
Can a security plugin fix permissions automatically?
Do not assume that a plugin repairs ownership or permissions because it scans files. Detecting a changed file and repairing its access settings are different tasks.
Check the documentation for your installed security plugin before enabling an automatic repair feature. Discuss proposed changes with your hosting provider if their effect is unclear.
A separate precaution is disabling the built-in WordPress theme and plugin code editors. WordPress supports the DISALLOW_FILE_EDIT setting for this purpose, but it does not prevent every route to modifying files. The WordPress file-editing documentation explains this option.
Keep file permissions in perspective
Correct permissions are one part of website security. They work alongside maintained software, appropriate account access and recoverable backups—not as a replacement for them. WordPress’s hardening guidance covers this broader approach.
For related guidance, read why website maintenance matters and our website security and backup guide.
If you are facing an error now, start by recording the message and contacting your host. A clear description and a targeted fix can help you resolve the problem without making unnecessary changes.
