---
title: "Calendar servers"
canonical: "https://docs.cuesystem.com/space/ADMINWEB/280199193/Calendar%20servers"
format: markdown
---
The following chapter applies to Exchange, Microsoft 365 and Google Workspace servers. In FW 27, the mechanism described below is not yet implemented for IceWarp, Zimbra, and the touchONE-overview unit. Also, this mechanism is not implemented in the touchONE-manager because it does not communicate permanently with calendar servers.

If there are errors in communication with calendar servers during the reservation system operation, eg. error messages are displayed on the screens, it is not possible to create meetings, etc., it is possible to write communication errors in a log file and then evaluate the log file to determine the cause of errors.

## Enable logging

- Open the admin web of the affected unit as described in the [touchONE Units Admin Web](https://cue.atlassian.net/wiki/spaces/ADMINWEB/pages/274563094).
- Select "**Logs**"
- Select "**Calendar servers**".
- Use the "**Enable logging for next 7 days**" button to enable error logs with server communication to be written to the log file.

> ℹ️ After 7 days, logging is automatically turned off to save space in the internal memory of the unit.

## Log files

- If there are any errors in communication with servers when logging is enabled, a log file is created automatically.
- A separate file is created for each day.
- The list of files is displayed on the "**Logs**" page, "**Calendar servers**" tab.
- Clicking on the file name will download the file to your computer and save it in the "Downloads" folder.
- Use the "**Delete**" or "**Delete all**" buttons to delete old, unnecessary files.
- In the log file you can find details of communication errors, e.g.:

|  |
| --- |
| *2019/12/13 14:28:52.53 - 0.38s - Error 234*  
*HTTP/1.1 401 Unauthorized Server: Microsoft-IIS/10.0*  
*request-id: 12bca424-4084-49f2-a5ba-83cccac11605*  
*X-CalculatedFETarget: AM6PR02CU001.internal.outlook.com X-BackEndHttpStatus: 401*  
*Set-Cookie: exchangecookie=1951905f1ae84c6cb0baca7d34fbd550; expires=Sun, 13-Dec-2020 13:28:52 GMT; path=/; secure; HttpOnly*  
*X-FEProxyInfo: AM6PR02CA0036.EURPRD02.PROD.OUTLOOK.COM*  
*X-CalculatedBETarget: AM6PR83MB0231.EURPRD83.PROD.OUTLOOK.COM*  
*X-BackEndHttpStatus: 401*  
*X-RUM-Validated: 1*  
*X-MailboxGuid: 71f6b888-b0c0-4c9b-b812-e6cd61b3bf42 X-BeSku: Gen9*  
*X-DiagInfo: AM6PR83MB0231*  
*WWW-Authenticate: Basic Realm="" Date: Fri, 13 Dec 2019 13:28:52 GMT*  
*Content-Length: 0* |

Found errors can be consulted with:

- IT administrator
- IT service provider
- touchONE support at [support@cuesystem.com.](mailto:support@cuesystem.com)

## Disable logging

- Press the "**Disable logging**" button to stop writing communication errors to the file.