We have completed a clean installation of Office Home and Business 2024 after fully removing fully removing Office 2021.

It was no easy.

More when I get a few minuets.

After much effort, we have managed to install a clean copy of Microsoft Office Home and Business 2024 on a Windows 11, Pro Version 24H2 workstation.

To accomplish the clean Office 2024 install we had to remove all traces of former Office installations including residual files and registry entries.

Fortunately, after much searching, we found a web posting by MS.CODE that showed us a way to fully remove former Office installations.

https://ms.codes/blogs/microsoft-office/how-to-clean-uninstall-microsoft-office?srsltid=AfmBOoq3Q7Kzqby0z0QbidSbB6_0julcPRGFSv2lCABabok1fPiPUjA0

The approach that was successful for us is as follows:

1. Saved, to an external drive, all existing Outlook calendars and contacts using Outlook’s Open & Export utility;
2. Backed up the computer to an external drive;
3. Opened Revo Uninstaller Pro and uninstall Microsoft Office;
4. Restarted the computer;
5. Recognized that Revo does not completely remove Office components from Windows 10 or 11;
6. Then we:
   1. Deleted Office files and folders by opening File Explorer, finding the Microsoft Office installation directory in either C:\Program Files or C:\Program Files (x86) and removing the entire Microsoft Office folder, and then emptying the Recycle Bin to permanently remove the deleted files;
   2. Removed Office Registry Entries by pressing the Windows key + R opening the Run dialog box, typing “regedit” and hitting Enter to open the Registry Editor, then navigating to the following registry keys and deleting any entries related to Microsoft Office (HKEY_CURRENT_USER\Software\Microsoft\Office and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office), then restart the computer;
7. Removing any Office remnants using Disk Cleanup by:
   1. Opening File Explorer,
   2. Right-clicked on the drive where Microsoft Office was installed (usually the C: drive),
   3. Selected “Properties” from the context menu,
   4. Clicked on the “Disk Cleanup”,
   5. Selected the checkbox next to “Temporary files” and any other relevant options, and
   6. Clicked “OK”,
   7. Then clicked “Delete Files” to start the cleanup process, and restarting the computer.

Our reason for reinstalling and upgrading to Office 2024 was I had transferred Office 2021 from a Windows 10 Pro computer to a Windows 11 Pro workstation using Laplink’s PCmover. The transfer did not go as planned and we ended up with multiple Contact lists and Calendars that did not play well together.

We were unsuccessful in removing the unwanted Outlook 2021 contacts and calendars from within Outlook so we tried to:

• Unsuccessfully to reinstall Office 2021 (it did not solve the calendar contacts problem),
• Install a new copy of Office 2024 after using Revo Uninstaller Pro to remove Office 2021 (it did not solve the calendar contacts problem), and then
• Used the method outlined above and now all is well.