Description: Microsoft Office 2019/2021 Error Code 1006-4 is found when you are trying to install an Office program.
Solution For Error Code 1006-4:
The basic troubleshooting for error code 1006-4 is to repair the office program if it fails we need to uninstall and reinstall the program. The necessary steps may be helpful in understanding how to install Office and Uninstall/repair Office programs.
Windows 10
- Press the Windows logo key + X to see a list of commands and options. (Basically, a quick way to get to Programs and Features in Control Panel.)
- Click Programs and Features.
- Click the Office program you want to repair, and then click Change.
- Do one of the following:
- In-Office 2021, click Repair > Continue.
- In-Office 2019, click Quick Repair.
Office Windows 8
- Press the Windows logo key + X to see a list of commands and options. (Basically, a quick way to get to Programs and Features in Control Panel.)
- Click Programs and Features.
- Click the Office program you want to repair, and then click Change.
- Do one of the following:
- In-Office 2019, click Repair > Continue.
- In-Office 2021, click Quick Repair.
Windows 11
- Click Start > in search type bar>Control Panel > Programs > Programs and Features.
- Click the Office program you want to repair, and then click Change.
- Do one of the following:
- In-Office 2019 & 2021/ 365 office installation, click Repair > Continue.
- In-Office 2019 & 2021 click Quick Repair.
You might need to restart your computer after the repair is complete.
If the issue still persists you need to uninstall the office and reinstall.

Type in the product key and click on Setup It will ask you to log in to your Microsoft account. So that the new installation is associated with your Microsoft Account. Hence it is not required to keep the product key for future use. It will be added to your Microsoft Account. Follow the below steps to complete the installation
Now you are good to use the new Office 2019 or Office 365.
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