Office 2021 Professional Plus – Installation Guide

Thank you for your purchase! We’re delighted you chose our Office suite. If you’ve just received your Office 2021 and aren’t quite sure how to get started – no problem. This guide will walk you through the entire installation process step by step, ensuring everything runs smoothly.

Choosing the right version – 32-bit or 64-bit?

Before you begin, you need the right version for your system:

64-bit version: https://rb.gy/mxbp4u Ideal for modern and powerful computer systems with appropriate hardware

32-bit version: https://rb.gy/lsh55o The most reliable choice for maximum compatibility and stability

Our recommendation: Use the 32-bit version, as it works most reliably with most systems and add-ins. This will save you from potential compatibility problems.

Removing old Office versions – The most important step

Before installing Office 2021, you must completely remove all previous Office versions. This is the most common cause of installation problems and errors. Here’s how:

Find and delete old Office versions

1. Go to Settings → Apps & Features
2. Or use the Control Panel → Programs and Features
3. Search for all Office entries (2019, 2016, Office 365, etc.)
4. Uninstall each version individually

Very important: After every uninstallation, you must restart your PC. Otherwise, remnants will remain that can block the new installation.

Complete and clean removal with Revo Uninstaller

For a truly thorough removal, we recommend the free tool Revo Uninstaller:

1. Download Revo Uninstaller for free and run the program: https://www.revouninstaller.com/de/
2. Search for entries such as: Microsoft Office 2019 Click-to-Run or individual programs such as Word, Excel, Outlook
3. Uninstall each entry individually
4. Then select the „Advanced“ scan mode.
5. Delete all found registry entries and temporary files.
6. Repeat this for all Office components.

Finally: Restart your PC. Now your system is clean and ready for the new installation of Office 2021.

Installing Office 2021 – Step by Step

Now it’s simple and straightforward:

1. Download your Office suite using the download link above.
2. Open the file by double-clicking – Windows 10/11 will automatically mount it.
3. Start the installation via start.bat or run

Important: Do not use programs like WinRAR or WinZip – this can damage the folder structure and lead to errors.

If necessary: ​​Right-click on the installation file → „Run as administrator“ – this often resolves permission problems.

Activation with your product key

After successful installation, you need to activate Office to use all its features:

1. Open Word (or another Office program)
2. Click on File
3. Go to account
4. Select „Enter product key“ or „Change license“
5. Enter your product key

Done! Your Office 2021 is now fully activated and ready to use.

Common problems and solutions

Problem: Installation fails or is aborted?

Solution: 99% of problems arise because old Office versions were not completely removed. So be sure to take your time with preparation – it will save you a lot of stress and frustration later.

Problem: The programs don’t open after installation?

Solution: Restart your computer and try again. A restart in safe mode often helps as well.

Conclusion – Your Office 2021 is ready!

This Office 2021 installation guide should help you install everything without any problems. The most important thing is to completely remove all old versions – that’s the key to success. Enjoy your Office 2021!