In addition, we explain why this can happen
Microsoft Office Click-To-Run (OfficeC2Rclient.exe) High CPU Usage in Windows 11/10
Is Microsoft Office Click-to-Run using excessive processing power and causing your computer to buzz or overheat? We’ll help you understand why this is happening and show you several ways to fix it.
Please note: The troubleshooting steps in this tutorial apply to computers running Windows 10 and Windows 11.
Microsoft uses Click-to-Run to download, install, and run Microsoft 365 and Office applications on Windows. With Click-to-Run, you can use Office apps while installing the Office suite in real time. You no longer have to wait for Windows to download or install the entire suite before you can use an Office application.