: Use the Office Customization Tool to create a configuration.xml file.
Microsoft Office LTSC (Long-Term Servicing Channel) Professional Plus 2021 is the "perpetual" version of Office designed for commercial and government customers who need a static, non-subscription version of the suite. Unlike standard retail versions, it does not typically come as a single, direct ISO download from public Microsoft pages. Instead, it is deployed using the Office Deployment Tool (ODT) Microsoft Learn Official Download Method (Recommended) The most reliable way to get the installation files for Microsoft Office LTSC Professional Plus 2021 is through Microsoft's own deployment framework. Petri IT Knowledgebase How to Install Office LTSC 2021 - Petri IT Knowledgebase : Use the Office Customization Tool to create
The process is more technical than a standard installer and generally follows these stages: Download Link for Office 2021 LTSC - Microsoft Q&A Instead, it is deployed using the Office Deployment
This step essentially creates your "offline installer" (similar to an ISO) by pulling files from Microsoft's servers. Open as an Administrator . : Use the Office Customization Tool to create