> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/products/cc-software/troubleshoot/command-centre-connection-issues/command-centre-connection-issues-unabl.md).

# Unable to Login to Configuration client but can open through Co

[Command Centre - Connection Issues](/knowledge-hub/products/cc-software/troubleshoot/command-centre-connection-issues.md) › Unable to Login to Configuration client but can open through Command Centre Client

The Command Centre Client app launches, but the Configuration Client fails to run and open. There are two known causes.

## Cause 1: Region mismatch

Example log:

```
2023-10-17 08:11:53:041, CCFT[15ec:057c], TRACE, CWAD::Logon - User name: 'system', Workstation: 'Gallagher-WS'
2023-10-17 08:11:53:041, CCFT[15ec:057c], TRACE, Resource manager exception: ( GetRfc1766Info Failed )
```

**Issue:** A Microsoft API issue fails to translate the LCIDs to the correct readable text, causing an incorrect language format.

**Workaround:**

* Navigate to **Control Panel > Clock and Region > Region**.
* Change the **Format** section to **English (US)** or **English (UK)**.
* Confirm there are no multiple `config.exe` processes running in the background (Task Manager).

**Solution:**

1. Update to the latest Windows Update.
2. Change the format to either English (US) or English (UK).
3. Revert back to the required format for the site.
4. Restart the server/workstation.

## Cause 2: Web Sockets not being enforced

Same symptom (Config client will not open, CC client will). Example log:

```
2024-03-11 10:09:54:919, [19344:1], DEBUG, UnsafeOpcUaClientLogonManager.BeginDiscoverEndpoint searching for the server
2024-03-11 10:09:54:999, [19344:5], DEBUG, UnsafeOpcUaClientLogonManager.DiscoverEndpointComplete ---------- In DiscoverEndpointComplete. -----------
2024-03-11 10:09:57:001, [19344:1], TRACE, App.Application_Exit application shutting down
```

**Issue:** The Web Sockets used for communication between Workstations and Server can sometimes fail to start (rare).

**Workaround:**

* In the CCFT registry, if you find `ClientUseNewWebsockets=0` (which forces the old WebSocket protocol), **remove it**.
* If the key is not present, you can add `ClientUseNewWebsockets=1` to the server and workstation to **force** the new Web Sockets for communication.

![Config Client connection error](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-55da15dd73eaacf4b6b00fafc259e73414f3660f%2FSECHUB-CCS-CONN-LOGIN-CC-01.png?alt=media)

***

🔗 **Related**

* [Unable to log into Command Centre Client via IPv6](/knowledge-hub/products/cc-software/troubleshoot/command-centre-connection-issues/command-centre-connection-issues-u-2.md). IPv6 connection setup.


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