This error code 1704 may occur due to insufficient updates on your computer. If you feel all the updates are up to date, follow the below steps to fix the issue.

Solution to fix error code 1704 in office 2019/2021
The basic troubleshooting to repair error Code 1704 is to repair the office program if it fails we need to uninstall and re-install the program. The necessary steps may be helpful in understanding how to install Office and Uninstall/repair Office programs.
Windows 11
- Click Start > in 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:
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- In-Office 2010, click Repair > Continue.
- In-Office 2013, click Quick Repair.
You might need to restart your computer after the repair is complete.
Windows 8 & 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 2019, 2021 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.
However, if you’re not able to fix the Office issue after all the steps. We’d like to provide with you an alternative way to install/repair Office.
If you need further assistance in performing the proposed actions, please don’t hesitate to chat with our Technical experts.
The installation errors or any run time errors might occur due to the following issues.
> There may be temporary files, temporary internet files, junk files and cookies which may hamper the performance of your computer.
> This will slow down the performance of your computer and also affects the program’s response if it is not resolved.
> There are inevitable issues like malware and spyware if we do not Optimize your computer.
> All such issues might also sometimes crashes the system programs.
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