# Source: https://upstash.com/docs/redis/troubleshooting/no_auth.md

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# NOAUTH Authentication Required

### Symptom

The client can not connect to the database throwing an exception similar to:

```
[ioredis] Unhandled error event:
ReplyError: NOAUTH Authentication required
```

### Diagnosis

The server does not let you connect because the password is missing in your
connection parameters.

### Solution

Check your connection parameters and ensure they contain the password. If you
are using ioredis (Redis client) with a Redis URL, check the URL format. ioredis
requires a colon before the password. The format for IORedis - TLS enabled

```
rediss://:YOUR_PASSWORD@YOUR_ENDPOINT:YOUR_PORT
```

The format for IORedis - TLS disabled

```
redis://:YOUR_PASSWORD@YOUR_ENDPOINT:YOUR_PORT
```

You can copy the correct client configuration from Upstash console clicking on
**Redis Connect** button.