You may face this issue when you are trying to install Office 2016/2019 Stu after uninstalling preinstalled office 365 Demo.
![](https://www.kadvacorp.com/wp-content/uploads/2024/07/Office-16-Click-to-Run-Extensibility-Component-64-bit-Registration-prevents-Office-365-32-bit-installation-Fix-1024x768.avif)
To completely uninstall Office 16 Click-to-Run Extensibility Component 64-bit Registration follow the steps
- Press Win + R to open the Command Prompt, type “installer” and click Enter to open the folder in File Explorer.
- Add the column “Subject”, Right-click the column headers, and click More and select Subject
![](http://cdn-5f8f2694c1ac1811c803f1bc.closte.com/wp-content/uploads/2024/07/office16_64bit_365_32bitc-1024x572.webp)
- sort on the Subject column and scroll down until you locate the name “Office 16 Click-to Run Extensibility Component 64-bit Registration”
- Right-click the MSI file and choose to uninstall
![](http://cdn-5f8f2694c1ac1811c803f1bc.closte.com/wp-content/uploads/2024/07/office16_64bit-365_32bitd-1024x572.webp)
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