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How To fix Microsoft office installation Error code 30045-4

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Error 30045-4 is commonly associated with Microsoft Office installation or update processes. It typically occurs when there is a problem with the Office suite’s installation files or when there are conflicts with existing Office components on the system.
The Microsoft office error code “30045-4” is associated with Microsoft Office installation or update issues.

Error code: 30045-4

Here are five possible causes and solutions for this Microsoft office installation error 30045-4:

1. Internet Connectivity issues:

Cause: Poor or unstable internet connection can interfere with the download or installation process.
Solution: Check your internet connection stability and try the following steps

  • Restart your router/modem.
  • Connect to a different network if available.
  • Try downloading or installing at a different time when internet traffic is low.

2. Conflicting Antivirus or Firewall:

Cause: Overprotective antivirus or firewall settings may block the installation or update process.
Solution: Temporarily disable your antivirus or firewall software and attempt the installation/update again.
If successful, make sure to configure your security software to allow Microsoft Office through its settings.

3. Previous Installation Files:

Cause: Leftover files from a previous installation or update may be interfering with the current installation process.
Solution: Completely remove any previous versions or remnants of Microsoft Office by following these steps:
Open the Control Panel and navigate to “Programs” or “Programs an
Uninstall any Microsoft Office related applications.

4. Use the official Microsoft Office uninstallation tool, if available.

Delete any remaining Microsoft Office folders in the “Program Files” or “Program Files (x86)” directory.
Restart your computer and attempt the installation/update again.

5. Corrupted Installation Files:

Cause: The installation files for Microsoft Office may be corrupted, preventing a successful installation or update
Solution: To resolve this issue, you can try the following steps:
a) Download the installation files again from a reliable source or use the official Microsoft Office installation media.
b) Check the integrity of the downloaded files by comparing their hashes with official sources or using file verification tools.
c) If the files are verified to be intact, try installing or updating Microsoft Office using the newly downloaded files.


By understanding its possible causes and following the troubleshooting methods outlined above, you can effectively resolve this Microsoft 365 error code 30045-4 and get your Office suite up and running smoothly.
If the issue persists, it is advisable to reach out to Microsoft support or consult their online forums for further assistance.

Error Code 30045-4 may occur due to following reasons: Due to Microsoft Office system file get corrupt. Previous installation had not removed properly. Windows Firewall not allows to network access.

1.Disable Antivirus Software.

2. Run windows Troubleshooter.

3. Clear Temporary Files.

4. Repair Microsoft Office.

5. Reinstall Microsoft Office.

  1. Click start and search word.
  2. Open the program.
  3. Click on file menu.
  4. Select Account and Goto update options. Then click on update now.
  1. Right click the  start menu.
  2. select installed apps on the top menu.
  3. Type in search app for your office program.

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