Skip to content
  • Solutions
    By Role
    • For Developers
    • For Content Managers
    • For Agencies
    • For IT Admins
    • For Web Hosters
    • For Developers
    • For Content Managers
    • For Agencies
    • For IT Admins
    • For Web Hosters
    By Infrastructure
    • Overview
    • AWS
    • Microsoft Azure
    • Alibaba Cloud
    • Google Cloud Platform
    • Vultr
    • Overview
    • AWS
    • Microsoft Azure
    • Alibaba Cloud
    • Google Cloud Platform
    • Vultr
    • Digital Ocean
    • Linode
    • Upcloud
    • Oracle
    • OVH
    • Digital Ocean
    • Linode
    • Upcloud
    • Oracle
    • OVH
  • Product
    • Plesk Features
    • Plesk Editions
    • What’s new
    • Pricing
    • Roadmap
    • Lifecycle Policy
    • Extensions Catalogue
  • Pricing
  • Extensions
    Featured Extensions
    • SocialBee
    • WP Toolkit
    • Sitejet Builder for Plesk
    • SEO Toolkit
    • Joomla! Toolkit
    • Premium Email
    • Email Security
    • SocialBee
    • WP Toolkit
    • Sitejet Builder for Plesk
    • SEO Toolkit
    • Joomla! Toolkit
    • Premium Email
    • Email Security
    Bundles and packs:
    • Business and Collaboration Edition
    • WP pack
    • Hosting pack
    • Power pack
    • Language pack
    • Business and Collaboration Edition
    • WP pack
    • Hosting pack
    • Power pack
    • Language pack

    See all Extensions

  • For Partners
    • Plesk Contributor Program
    • Plesk Partner Program
    • Affiliate program
    • Plesk University
  • Help Center
    • Documentation
    • Professional Services
    • Support
    • Contact Us
    • Wiki
    • Forum
  • Plesk 360 login
  • Free Trial
  • Pricing
  • Solutions
    • By Role
      • For Developers
      • For Content Managers
      • For Agencies
      • For IT Admins
      • For Web Hosters
    • By Infrastructure
      • Overview
      • Plesk on Amazon Web Services (AWS & Lightsail)
      • Microsoft Azure
      • Alibaba Cloud
      • Google Cloud Platform
      • Vultr
      • DigitalOcean
      • Linode
      • UpCloud
      • Oracle
      • OVH
  • Products
  • Pricing
  • Extensions
    • Featured Extensions
      • SocialBee
      • WP Toolkit
      • Sitejet Builder for Plesk
      • SEO Toolkit
      • Joomla! Toolkit
      • Premium Email
      • Email Security
    • Bundles and packs:
      • Business and Collaboration Edition
      • WP pack
      • Hosting pack
      • Power pack
      • Language pack
      • See all Extensions
  • For Partners
    • Plesk Contributor Program
    • Plesk Partner Program
    • Affiliate Program
    • Plesk University
  • Help Center
    • Documentation
    • Professional Services
    • Support
    • Contact Us
    • Wiki
    • Forum
  • Plesk 360 login
  • Free Trial
  • Pricing
  • Solutions
    • By Role
      • For Developers
      • For Content Managers
      • For Agencies
      • For IT Admins
      • For Web Hosters
    • By Infrastructure
      • Overview
      • Plesk on Amazon Web Services (AWS & Lightsail)
      • Microsoft Azure
      • Alibaba Cloud
      • Google Cloud Platform
      • Vultr
      • DigitalOcean
      • Linode
      • UpCloud
      • Oracle
      • OVH
  • Products
  • Pricing
  • Extensions
    • Featured Extensions
      • SocialBee
      • WP Toolkit
      • Sitejet Builder for Plesk
      • SEO Toolkit
      • Joomla! Toolkit
      • Premium Email
      • Email Security
    • Bundles and packs:
      • Business and Collaboration Edition
      • WP pack
      • Hosting pack
      • Power pack
      • Language pack
      • See all Extensions
  • For Partners
    • Plesk Contributor Program
    • Plesk Partner Program
    • Affiliate Program
    • Plesk University
  • Help Center
    • Documentation
    • Professional Services
    • Support
    • Contact Us
    • Wiki
    • Forum
  • Plesk 360 login
  • Free Trial
Plesk 360 login
Free Trial

Knowledge Base

Unable to update, upgrade or install Plesk: The installation of the package ‘example’ failed with code 1603

 
install pleskinstallation upgradeinterfacemicrosoftplesk for windows

Symptoms

Plesk update, upgrade or installation fails with an error that is similar to the following:

Failed to install 'C:ParallelsInstallercachepoolreleasePLESK-WIN_18.0.64_15680dist-windowsplesk-backend.msi': Fatal error during installation. (Error code 1603)
Sub-action 'InstallMsiPackage' failed with error code: 1603(0x00000643)
Error: The installation of the package 'plesk-backend' failed with code 1603. (upgrade: Upgrading Plesk Utilities...)
Not all packages were installed.

Upgrading Plesk base locale...
Failed to install 'C:ParallelsInstallerparallelsPANEL-WIN_17.8.11dist-windowsplesk-locale-base-en-US_mu011.msi': Fatal error during installation. (Error code 1603)
ERROR: The installation of the package 'plesk-locale-base-en-US' failed with code 1603. (upgrade: Upgrading Plesk base locale...)
Not all packages were installed.
Please contact product technical support.
exit status 1

Cause

Another MSI package installation is in progress or a reboot is required after a previously completed installation of an MSI package (many MSI package have such a requirement).

Resolution

  1. Connect to the server via RDP

  2. Complete the installation of any pending Windows updates
  3. Reboot the server

  4. Open Windows Task Manager and verify that the msiexec.exe process is not running. In case it is running, either wait for the process to finish or terminate it manually.

  5. Restart Plesk update in a command-line interface:
    5.1. Start a command prompt as an Administrator
    5.2. Execute the following command:

    C:> plesk installer update

  6. If the installation fails with the same error message, follow the steps from this official Microsoft article:
    MSI installation error 1603 - Windows Server | Microsoft Learn

Tweet
Share
Share
Email
0 Shares
Read the full article
Related Posts

The Comfortable Advantages of the Hosting Control Panel

Read More »

How to Install Plesk On Linux?

Read More »

Web Hosting News: The latest for October

Read More »
Knowledge Base

Plesk update/upgrade fails: The installation of the package ‘iiscompression’ failed with code 1603

Read More »

Unable to update or remove .msi packages: MSI: Error! The older version of Microsoft ODBC Driver 13 for SQL Server cannot be removed

Read More »

How to update Plesk Obsidian to the latest build?

Read More »

How to install Plesk updates

Read More »

Hosting Wiki

  • DBMS Interface
  • Server Redundancy
  • AMP
  • Bare Metal Server
  • Oracle VM Server
  • Server Virtualization Software
  • Windows Server
  • Plesk
  • Web Server
  • DNS Server
X-twitter Linkedin Youtube Reddit Github
  • Product
  • Login
  • Pricing
  • Editions
  • For Partners
  • Partner Program
  • Contributor Program
  • Affiliate Program
  • Plesk University
  • Company
  • Blog
  • Careers
  • Events
  • About Plesk
  • Our Brand
  • Resources
  • User and Admin guides
  • Help Center
  • Migrate to Plesk
  • Contact Us
  • Hosting Wiki
  • Forum
  • Legal
  • Legal
  • Privacy Policy
  • Imprint

© 2025 WebPros International GmbH

Part of the WebPros®  Family