---
title: "One-Time Manual Update Required for CT Cloud Communicator for Windows Desktop 3.21.25+"
slug: "one-time-manual-update-required-ct-cloud-communicator-windows-desktop"
tags: ["calltower", "public"]
updated: 2026-09-18T16:50:04Z
published: 2026-09-18T16:50:04Z
canonical: "learn.calltower.com/one-time-manual-update-required-ct-cloud-communicator-windows-desktop"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://learn.calltower.com/llms.txt
> Use this file to discover all available pages before exploring further.

# One-Time Manual Update Required for CT Cloud Communicator for Windows Desktop 3.21.25+

The guide below will walk you through installing CT Cloud Communicator 3.21.25+ in order to restore in-app upgrade functionality.

[One-Time Manual Update Required for CT Cloud Communicator for Windows Desktop 3.21.25+](https://cdn.us.document360.io/4662144b-ab1f-4796-8b7b-e9f9c609894f/Images/Documentation/One-Time_Manual_Update_Required_for_CT_Cloud_Communicator_for_Windows_Desktop_3.21.pdf?sv=2026-02-06&spr=https&st=2026-11-04T21%3A37%3A39Z&se=2026-11-04T22%3A37%3A39Z&sr=c&sp=r&sig=4zPJ5jmRBVnHTHtLIdmi4jMWMfXmvy%2Fo8aiG%2BnVnNmM%3D)[.pdf](/v1/docs/one-time-manual-update-required-ct-cloud-communicator-windows-desktop)