IT Home, October 10 news: Tech media NeoWin posted a blog yesterday (October 9) reporting that Microsoft has urgently notified organizations that Chromium-based browsers may cause Remote Desktop Web Access (RD Web Access) on Windows Server to fail after the November update.
Google has announced that Chromium browsers plan to discontinue client-side XSLT support in mid-November 2026. IT Home note: XSLT stands for Extensible Stylesheet Language Transformations, a rule-based language used to convert XML documents into other formats or structures.
Web pages can use browser-side XSLT to process XML data and generate displayable content; since Microsoft Remote Desktop Services web portal, RD Web Access, relies on this technology to transform pages, disabling support for this feature in related browsers may prevent users from accessing the page properly.
Regarding the deactivation of XSLT, Google cited two primary reasons: first, low usage—client-side XSLT accounts for approximately 0.02% of total web traffic; second, security risks—the libxslt library used by Chromium is a complex, outdated C/C++ codebase that may contain memory safety vulnerabilities such as buffer overflows.
As a workaround, Microsoft has released update KB5130993, allowing administrators to temporarily restore client-side XSLT processing by setting the XSLTEnabled value to 1 for Microsoft Edge or Chrome via policy or registry.
Microsoft also lists HTML5 web client solutions. After logging into the client, users can launch a remote desktop session directly in their browser or download an RDP file. Another option is to enable IE mode in Microsoft Edge and add the RD Web address to the relevant site list. When opening the portal for the first time, Edge may request permission to enable ActiveX functionality to support single sign-on using the logged-in user’s credentials.