Troubleshooting the 0x800706ba Error: RPC Server Issues in Office 2021 Setup

Follow these essential steps to address the 0x800706ba error when setting up Office 2021:

1. Initiate a system reboot: Often, rebooting your system can resolve the problem. Restart your computer and attempt the Office 2021 installation once more.
2. Verify the RPC service's status: Press the Windows key + R, type 'services.msc' into the Run dialog box, and hit Enter. Search for the 'Remote Procedure Call (RPC)' service and ensure it is active. If inactive, right-click and choose 'Start'.
3. Ensure the RPC service is set to automatic: Right-click on the 'Remote Procedure Call (RPC)' service in the Services window, select 'Properties', and under the 'General' tab, check that the 'Startup type' is 'Automatic'.
4. Confirm that Windows Firewall is not obstructing RPC service: Hit the Windows key + R, type 'firewall.cpl', and press Enter. Navigate to 'Allow an app or feature through Windows Firewall' and confirm that both 'Remote Assistance' and 'Remote Desktop' are permitted.
5. Temporarily disable any third-party antivirus: At times, third-party antivirus software may disrupt the installation. Temporarily deactivate your antivirus and try to install Office 2021 again.
6. Utilize the Office installation troubleshooter: Microsoft offers a troubleshooting tool designed to automatically resolve common setup problems. Access and run the Office installation troubleshooter available on the Microsoft website.