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How to Fix Microsoft Office 2021 Installation Error 30045-44 (1)
Question details
The user is unable to install Microsoft Office 2021 and receives error code 30045-44 (1) during the setup process.
- Product
- Microsoft Office 2021 Home and Business
- Device & OS
- Windows
- Scenario
- Attempting to install Office 2021 purchased through an employer discount program.
- Observed behavior
- The installation fails repeatedly, displaying error code 30045-44 (1), and standard troubleshooting or manual removal of previous installations has not resolved the problem.
Ensure you have the login credentials for the Microsoft account associated with your Office purchase and a stable internet connection before proceeding.
Verify Account License and Perform a Clean Reinstallation
Use this method to confirm your account has the correct license, clear network configuration blockers, and completely remove conflicting Office remnants.
Error 30045-44 (1) frequently occurs when the Office installer detects conflicting fragments from previous installations (such as a pre-installed Microsoft 365 Family trial) or when network configurations block the activation server.
Go to the Microsoft account website and sign in. Navigate to the 'Services & subscriptions' page to verify that your Office 2021 Home and Business license is actively linked to the account.
Open Windows Settings, go to 'Apps', and search for any existing Microsoft Office or Microsoft 365 installations. Uninstall them completely. For a deeper clean, use the Microsoft Support and Recovery Assistant (SaRA) tool to remove hidden files and registry keys.
Open the Windows Control Panel and select 'Internet Options'. Go to the 'Advanced' tab and click the 'Reset' button. This clears network configurations that might be blocking the installer from reaching Microsoft servers.
If the network block persists, open 'Network Connections' in the Control Panel, right-click your active connection, and select 'Properties'. Select 'Internet Protocol Version 4 (TCP/IPv4)' and change the DNS server addresses to public DNS (e.g., 8.8.8.8 and 8.8.4.4).
Return to your Microsoft account 'Services & subscriptions' dashboard, download the Office 2021 installer directly from there, and run the setup. Once installed, launch Word or Excel and sign in with your licensed account to activate.
Use WPS Office to Bypass Installation Errors and Open Your Files Immediately
If Microsoft Office 2021 continues to fail with error 30045-44 (1), switch to WPS Office. It is a free, lightweight, and highly compatible alternative that installs in seconds without complex license checks, allowing you to get back to work instantly.
- 1. Download WPS Office: Visit the official WPS website and download the free installer for Windows.
- 2. Install the Software: Run the setup file. The installation is fast, lightweight, and completes without complicated registry modifications.
- 3. Open Your Files: Launch WPS Office and instantly open your existing Microsoft Word, Excel, or PowerPoint documents without compatibility issues.
Frequently Asked Questions
What causes Microsoft Office installation error 30045-44 (1)?
This error is typically caused by conflicting remnants of previously installed Office versions (such as an expired Microsoft 365 trial), incorrect network/DNS settings preventing communication with activation servers, or attempting to install with a mismatched account license.
Can I manually delete Office files to fix the installation error?
While you can manually delete folders in Program Files and remove registry keys, it is highly recommended to use the official Microsoft Support and Recovery Assistant (SaRA). Manual removal often leaves hidden background services intact, which can continue to trigger the 30045-44 (1) error.
Does resetting my internet settings affect my other applications?
Resetting Internet Options through the Control Panel restores default security and connection settings for built-in Windows network protocols. It rarely negatively impacts other applications and is an effective way to resolve connectivity blocks during the Office installation.
