This is not an official Microsoft download. Genuine Office 2021 installers are usually distributed through the Microsoft 365 Admin Center or the Office Content Delivery Network (CDN) via the Office Deployment Tool (ODT).
This is the professional way to download the "Retail" or "LTSC" versions of Office 2021. You can configure your installation using the Office Customization Tool . Microsoft.Office.2021x64.v2022.08.iso
These installers often disable "Office Telemetry" or update services to prevent the software from checking its license status, which also prevents it from receiving official security updates. This is not an official Microsoft download
If you need Microsoft Office 2021, it is safer to use official deployment methods that ensure you have the latest, clean files directly from Microsoft servers. You can configure your installation using the Office
The v2022.08 indicates the file was compiled in August 2022. Because Office 2021 receives regular security updates, a version from 2022 is outdated and missing years of critical security patches. Security Concerns:
Third-party ISOs are frequently modified to include trojans, miners, or "KMS" activators that bypass Windows Security and phone home to unknown servers.