---
title: Troubleshoot Start-Up Errors
slug: help/en-us/dairycomp/troubleshoot-start-up-errors
docTags: 
createdAt: 2026-01-26T11:43:17.587Z
---

<font color="#67854E">**Question**</font>: I'm having trouble opening/starting DairyComp. What should I do?

<font color="#67854E">**Answer**</font>: Expand the topics below for more information on the start-up issue you're experiencing:

:::ExpandableHeading{isOpen="true"}
## My DairyComp application is frozen.

If DairyComp is not responding to your keyboard entries or mouse clicks, follow the steps below:

1. Open the Task Manager on your computer.
   The easiest way to open the task manager is to press `Ctrl`+`Alt`+`Delete` on your keyboard and then select **Task Manager**.
2. In the Task Manager, choose **DairyComp305** under the list of running applications, then click the **End task** button.

   ::Image[]{src="https://api.archbee.com/api/optimize/3h8pSJcGUXEi4HGCCYPTA/1P8ZG7B13bG8BzkFE0Nzs_taskmanager.png" size="56" width="1229" height="464" position="flex-start" showCaption="false"}
3. Restart DairyComp by double-clicking the DairyComp icon on your desktop.

If the problem continues, please contact [VAS Support](docId\:erZnbNH1Ww36p9Q6RNPpV).
:::

::::ExpandableHeading
## The DairyComp application icon is missing from my desktop.

If the DairyComp application icon is missing from your desktop, follow the steps below to add it:

1. On your computer, open the Windows File Explorer and select your (C:) drive.
2. In the DairyComp folder, right-click the **DCWIN** application file (i.e., DCWIN.EXE, then click the **Create shortcut** option.

   ::Image[]{src="https://api.archbee.com/api/optimize/3h8pSJcGUXEi4HGCCYPTA/qZQk5Ve0PPwVjhozupo-p_create-shortcut.png" size="34" width="849" height="591" position="flex-start" showCaption="false"}

:::hint{type="info"}
**NOTE:&#x20;**&#x49;f you use the DairyComp client program, right-click the **DCClient** application file instead.
:::
::::

:::ExpandableHeading
## An error message says to contact support.

[Contact VAS Support](docId\:erZnbNH1Ww36p9Q6RNPpV) whenever you need further assistance.
:::

:::ExpandableHeading
## I need to register my computer with DairyComp.

If you see a screen asking you to register your computer, click the **Online registration** button. If the window displays the confirmation message, click **Close** and DairyComp will automatically open.

::Image[]{src="https://api.archbee.com/api/optimize/3h8pSJcGUXEi4HGCCYPTA/Mofzyzcz1KKavuhvkOFRX_verify-computer.png" size="32" width="1345" height="604" position="flex-start" showCaption="false"}

See [Install DC305 on a New Computer](docId\:KlYUAjxjhk6pCDc6TSmxj) to learn more about registering DairyComp on a computer.

If you need additional help registering your computer, [contact VAS Support](docId\:erZnbNH1Ww36p9Q6RNPpV).
:::