---
title: CRC Cell is Unavailable
description: "**ERROR MESSAGES** ***CRC Cell is Unavailable*** # Possible Problems and Solutions: The following table is designed to assist you with troubleshooting this error. | When The Error Message Was Received | Possible Problem(s) | Possible Solution(s) | | --- |…"
url: "https://i2b2.org/docs/crc-cell-is-unavailable/"
updated: "2026-09-15"
category: i2b2 Installation Guide / Chapter 7. Troubleshooting Installation Errors
---

# CRC Cell is Unavailable

**ERROR MESSAGES**

***CRC Cell is Unavailable***

# Possible Problems and Solutions:

The following table is designed to assist you with troubleshooting this error.

| When The Error Message Was Received | Possible Problem(s) | Possible Solution(s) |
| --- | --- | --- |
| Received while logged into the i2b2 Web Client or Workbench | The possible causes for this error message may be one of the following: - The CRC Cell may not be deployed - The CRC Cell may be down; the services are not running - The CRC Cell may not be configured correctly in i2b2 Admin | - Verify the CRC Cell was deployed by looking in the deployments folder located in ***YOUR_JBOSS_DIR*** - If the cell was deployed you will see a file called crc-ds.xml.deployed - If it was not deployed you won't see the above file and will need to deploy the crc cell. - Check your web services to see if ***QueryToolService*** is listed as active. If it is not then you need to restart JBoss. - Verify the CRC Cell is configured correctly in i2b2 Admin. - The Cell Id should be CRC - The Cell URL should be the IP or domain name where the cell is located. |

# Installation Guide Resources:

The following resources address configuring deploying and configuring cells as well as checking web services.

| Resource For... | Chapter | Section |
| --- | --- | --- |
| Deploying the CRC Cell | [Data Repository (CRC) Cell Install](https://i2b2.org/docs/chapter-10-data-repository-crc-cell-install/) | [Deployment](https://i2b2.org/docs/10-5-deployment/) |
| Checking Web Services | [Data Repository (CRC) Cell Install](https://i2b2.org/docs/chapter-10-data-repository-crc-cell-install/) | [Verify CRC Installation](https://i2b2.org/docs/10-9-verify-crc-installation/) |
| Stop Services | [Data Repository (CRC) Cell Install](https://i2b2.org/docs/chapter-10-data-repository-crc-cell-install/) | [Stop Services](https://i2b2.org/docs/10-3-stop-services/) |
| Start Services | [Data Repository (CRC) Cell Install](https://i2b2.org/docs/chapter-10-data-repository-crc-cell-install/) | [Start Services](https://i2b2.org/docs/10-6-start-services/) |
| Configuring CRC Cell Data in i2b2 Admin | [Data Repository (CRC) Cell Install](https://i2b2.org/docs/chapter-10-data-repository-crc-cell-install/) | [Update CRC Cell Data in i2b2 Admin](https://i2b2.org/docs/10-7-update-crc-cell-data-in-i2b2-standalone-admin/) |
| Managing i2b2 Cells in i2b2 Admin | [Initial Setup of i2b2 in Admin](https://i2b2.org/docs/chapter-6-initial-setup-of-i2b2-in-admin/) | [Managing i2b2 Cells](https://i2b2.org/docs/6-4-managing-i2b2-cells/) |