# Patch Installation - "Fatal Error during Installation"

## Problem

You are trying to install patches but you get an error message - "Fatal Error during installation".

## Cause

This may be due to the following reasons:

1. Application is running in the background during installation. Eg: Deploying Google Chrome patch when Chrome processes are running on the client machine.
2. Errors specific to some patches.

## Resolution

Try **redeploying** the update at **System Startup**.

If the problem persists, contact [support](mailto:msp-endpointcentral-support@manageengine.com) with the following logs:

1. If you get this error message while trying to install a Non-Microsoft patch manually, then send the failure message screenshots.
2. If you get this error message while trying to install a Microsoft patch, then verify the `%windows%\KB******.logs` and upload the same.
3. [Upload the Agent logs](https://www.manageengine.com/desktop-management-msp/logs-how-to.html) pertaining to the computers where the patch is being installed along with the screenshots of manual installation, if the startup configuration fails.

Refer to the links below for details regarding the following applications:

1. [Chrome patch failure](https://www.manageengine.com/patch-management/knowledge-base/chrome-patches-failure-error-code-1603.html)
2. [Adobe Acrobat Reader DC patch failure](https://www.manageengine.com/patch-management/knowledge-base/fatal-error-acrobat-installation.html)
3. [Adobe Acrobat fatal error code 1603](https://www.manageengine.com/patch-management/knowledge-base/adobe-acrobat-fatal-error-code-1603.html)

**Applies to:** Patch Deployment, Patch Installation Failure, Patch Installation Error, Patch Errors  

**Keywords:** Patch Installation, Patch Management, Patch Deployment Error, Patch Installation Failure