tb.rg-adguard.net is a popular third-party web service that acts as a front-end for Microsoft's servers, allowing users to generate direct download links for official Windows and Office ISO files.
Have you found other strange AdGuard domains in your logs? Drop them in the comments below and let’s decode them together!
indicates that a device tried to resolve that domain, and your filter prevented it.
Known as "TechBench by @WZT," it acts as a wrapper for Microsoft's own TechBench servers, allowing users to access a wide variety of software versions—including older builds and specific editions—that are often difficult to find through standard Microsoft portals. tb-rg adguard.net
When you use tb.rg-adguard.net to initiate a download, the file is not hosted on the site. Instead, it is sourced directly from Microsoft's official content delivery network ( *.microsoft.com ). The service acts as a direct link to Microsoft's servers, which means you are downloading authentic, digitally signed files directly from the software's original developer. By far the biggest safety guarantee is that the download originates from Microsoft, not a third-party server.
The site is primarily used by IT professionals and power users to bypass the often-slow Microsoft Media Creation Tool or to find specific older versions of software. It offers access to: Microsoft Learn Windows ISOs
(hosted at the tb.rg-adguard.net subdomain) simplifies this process. It acts as an advanced search engine and link generator. It uncovers the hidden, direct download links already hosted on Microsoft's official microsoft.com or ://microsoft.com domains. Is it Safe and Legal to Use? indicates that a device tried to resolve that
: It provides a dropdown menu system to filter by:
(Mac and Linux users can get ISOs without needing a Windows machine to run the It provides direct access to Enterprise versions that are often hidden. ⚠️ Note:
Because the site serves as a middleman that hands you a direct link to Microsoft's official servers, the files cannot be injected with malware, spyware, or ransomeware by the site creators. You are getting the exact, untouched image that Microsoft intended for distribution. How to Verify the Integrity of Your ISO Instead, it is sourced directly from Microsoft's official
High-security browser extensions or aggressive ad-blockers can sometimes disrupt the drop-down menus on the site. Temporarily pause your extensions if the menus fail to load.
Choose the architecture file, which will typically display the full file name and size (e.g., Win11_23H2_English_x64v2.iso ).
Understanding tb.rg-adguard.net: A Deep Dive into Windows ISO Downloads
If you use the AdGuard browser extension in “Verbose logging” mode, background requests to adguard.net may appear, including dynamic subdomains.