This Error Code 30088-4 applies to all versions of Windows like Windows 10, Windows 8 & 8.1.
Microsoft Office 2019/2021 Error Code 30088-4:
The basic troubleshooting for this error code 30088-4 is for the repair of the office program, if it fails we need to uninstall and reinstall the program. The steps may clarify how to install Office and Uninstall or repair Office programs.
Error Code 30088-4 Windows 10:
Press to the Windows logo key + X to see the 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:

Application Office, click Repair > Continue. In Office 2021, click Quick Repair.MS Office 2019, click Quick Repair. In Office 2019, click Quick Repair.
Windows 11:
- Click Start > in the search bar type 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 / Microsoft365, click Repair > Continue. New Version Office 2019, click Quick Repair.
- You might need to restart your system after the repair is done.
However, you might need to restart your computer after the repair is complete.
After that, if the issue still persists you need to uninstall the office and reinstall it. Type in the product key and click on Setup It asks you to log in to your Microsoft account. So that the new installation is linked with Microsoft Account. Hence it is not required to keep product keys for future use. Above all, it will be added to your Microsoft Account. Follow the steps to complete the installation.
In conclusion: Take help from our Online experts regarding any unsolved problems in your system. Also, go to our website for more details and information.
Now you are good to use the new Office 2019 or Office 365.
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