# Known issues

## 1. NETWORK PROTOCOL ERROR

Some players may encounter a **“Connection Lost - Network Protocol Error”** when trying to join the server. This issue is typically caused by an outdated or corrupted client installation of the modpack.

<figure><img src="/files/zI6ElijgNflkGz4gu32u" alt=""><figcaption></figcaption></figure>

This error usually happens when:

* Your local modpack files are not properly installed
* Some mods are missing or mismatched
* The pack version does not match the server

{% hint style="success" %}

#### Solution: reinstall the modpack installation

#### <img src="/files/EBp0Sc25WazRtkeLd21R" alt="" data-size="line"> Option 1: Modrinth (Recommended)

1. Delete your current installation of the modpack, you may want to save your map files.
2. Download the latest version from the official page:\
   👉 <https://modrinth.com/server/cobblemon-cobbletwo>
3. Install the pack again
4. Launch the game and reconnect<br>

#### <img src="/files/L32wjbn6E5uaSSaQyheb" alt="" data-size="line"> Option 2: CurseForge

1. Delete your current installation of the modpack, you may want to save your map files.
2. Download the latest version from the official page:\
   👉 [https://www.curseforge.com/minecraft/modpacks/cobbletwo](https://www.curseforge.com/minecraft/modpacks/cobbletwo/files/7566361)
3. Install the pack again
4. Launch the game and reconnect
   {% endhint %}


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