To download and install Microsoft Office LTSC Professional Plus 2021, Microsoft officially uses the Click-to-Run installation technology rather than traditional ISO files. This process requires the Office Deployment Tool (ODT) to retrieve installation files directly from Microsoft's Content Delivery Network (CDN). Official Installation Steps
Offline Capability: Fully functional without an internet connection after the initial activation. To download and install Microsoft Office LTSC Professional
Run the download command:setup /download configuration.xmlNote: The command prompt will look like it's doing nothing while it downloads several gigabytes of data into a new "Office" subfolder. Step 4: Install Office LTSC 2021 This will download the actual Office files to
This is the primary source. If your organization has purchased a Volume License agreement (Open, Enterprise, Select Plus): Select Plus): Official download options
This will download the actual Office files to the path specified in the XML (e.g., c:\temp\office2021).
How to download and run Office LTSC installation files not in VLSC
Stability: No new features are added over its lifetime, making it ideal for devices in secure or restricted environments. System Requirements