---
title: Outlook Add-in version Release History
description: Read release notes for the Customer Thermometer add-in; improvements and bug fixes and how to get the latest version
---
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August 12, 2026
# Outlook Add-in version Release History
The Customer Thermometer add-in receives updates via the [Microsoft marketplace](https://marketplace.microsoft.com/en-us/product/office/WA200000591?tab=Overview).
Updates should be automatically installed once propagated and below lists the release history and versions.
| **Release date** | **Version** | **Description** |
| --- | --- | --- |
| 12/08/2026 | v1.5.100 | - Third-party dependancy updates |
| 31/07/2026 | v1.5.0 | - Third-party dependancy updates - Removal of RUM monitoring |
| 07/06/2026 | v1.4.400 | - Error handling for unauthorised devices - Additional method to ensure subscription is captured - Third-party dependancy updates |
| 22/04/2026 | v1.4.100 | - Support for Custom field 11 & 12 - Third-party dependancy updates |
| 05/01/2026 | v1.2.100 | - Update copyright statement - Add RUM monitoring to help identify performance issues - Error handling for invalid login credentials - Third-party dependancy updates |
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