How to fix Sage 50 error “1628 Failed To Complete Installation”

Last updated: March 8th, 2024

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Understanding Sage 50 Error 1628: Failed to Complete Installation

Sage 50 is a powerful accounting software that helps businesses manage their financial tasks efficiently. It offers a wide range of features and tools to streamline accounting processes. However, like any software, Sage 50 can encounter errors that disrupt its functionality. One such error is the Sage 50 Error 1628, which occurs during the installation process and prevents the software from being installed successfully.

What is Sage 50 Error 1628?

Sage 50 Error 1628 is a runtime error that appears during the installation of the Sage 50 accounting software. When this error occurs, the installation process is abruptly terminated, and the software fails to install properly. The error message typically reads: "Error 1628: Failed to complete installation."

Causes of Sage 50 Error 1628

There can be several reasons behind the occurrence of Sage 50 Error 1628. Some of the common causes include:

  1. Corrupt or Incomplete Download: If the Sage 50 installation file is corrupted or not downloaded completely, it can lead to Error 1628 during installation.

  2. Improper Installation Process: An invalid or improper installation process can corrupt the Windows registry, resulting in Error 1628.

  3. Virus or Malware Infection: If your system is infected with a virus or malware, it can interfere with the installation process and cause Error 1628.

  4. Missing or Corrupt Company File: A missing or corrupt company file can also trigger Error 1628. This issue is often caused by firewall settings or antivirus software blocking the installation.

  5. Conflicting Software: If another software is actively running in the background during the Sage 50 installation, it can conflict with the installation process and lead to Error 1628.

Troubleshooting Sage 50 Error 1628

To resolve Sage 50 Error 1628 and successfully install the software, you can try the following troubleshooting steps:

  1. Uninstall and Reinstall Sage 50:

    • Click on the Start button and open the Control Panel.
    • Click on Programs and then select Programs and Features.
    • Locate the Sage 50 Accounting software in the list of installed programs.
    • Click on the Sage 50 entry and then click the Uninstall button.
    • Follow the on-screen instructions to complete the uninstallation process.
    • Once uninstalled, download a fresh copy of the Sage 50 installation file from the official website.
    • Run the installation file and follow the prompts to reinstall Sage 50.
  2. Disable Antivirus and Firewall:

    • Temporarily disable your antivirus software and firewall during the installation process.
    • This can help prevent any interference or false positive detections that may block the installation.
    • Remember to re-enable your antivirus and firewall after the installation is complete.
  3. Run as Administrator:

    • Right-click on the Sage 50 installation file and select Run as Administrator.
    • This ensures that the installation process has the necessary permissions to make changes to your system.
  4. Clean Boot:

    • Perform a clean boot of your system to disable all non-essential startup programs and services.
    • This minimizes the chances of conflicts with other software during the installation.
    • Follow the steps provided by Microsoft to perform a clean boot on your Windows operating system.

Frequently Asked Questions (FAQs)

Q: Can I continue using Sage 50 with Error 1628?
A: No, if Sage 50 encounters Error 1628 during installation, the software will not be installed properly, and you won't be able to use it. You need to resolve the error and successfully install Sage 50 before you can start using it.

Q: Will uninstalling and reinstalling Sage 50 delete my accounting data?
A: No, uninstalling Sage 50 will not delete your accounting data. Your data is stored in a separate company file, which remains intact even after uninstallation. However, it's always a good practice to create a backup of your company file before performing any major changes or troubleshooting steps.

Q: What should I do if the troubleshooting steps don't resolve Error 1628?
A: If you have tried the troubleshooting steps mentioned above and are still encountering Error 1628, it's recommended to contact Sage 50 support or seek assistance from a qualified IT professional. They can provide further guidance and help you resolve the issue based on your specific system configuration and environment.


Sage 50 Error 1628 can be frustrating when it prevents you from installing the software successfully. However, by understanding the causes behind the error and following the troubleshooting steps outlined in this article, you can resolve the issue and get Sage 50 up and running. Remember to ensure a clean and stable system environment, disable conflicting software, and run the installation with administrator privileges. If the error persists, don't hesitate to reach out to Sage 50 support for further assistance. Protection Status


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