# HTTP 423 Locked

**Code:** `423` · **Category:** HTTP · **Seen on:** REST API

The resource is locked, so the change was refused — common with WebDAV files and some APIs that lock records during processing.

## Meaning

WebDAV (SharePoint, Nextcloud, ownCloud, IIS WebDAV) returns 423 when another user or a stale lock holds the file. Some APIs use 423 for records being processed or accounts locked after failed logins.

## Common causes

- File open/checked out by another user or app
- Stale WebDAV lock after a crash
- Record locked while a background job processes it
- Account locked after too many attempts

## Quick fix

1. Close the file elsewhere or wait for the lock to expire
2. Remove the stale lock (admin)
3. Retry later for processing locks

## Detailed fix by platform

### Nextcloud

1. 

```bash
sudo -u www-data php occ files:scan --all
# stale locks: enable maintenance mode and clear the oc_file_locks table, or use Redis-based locking
```


## How to diagnose

1. **Holder** — Who holds the lock and since when?
2. **Expiry** — Does it clear on its own?
3. **Account** — Is it a login lockout instead?

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Source: [WhatIsMyError](https://whatismyerror.com/errors/http/423-locked)