Microsoft releases out of band KB5004760 Windows 10 update fixing problems with PDF Jun 29, 2021 16:24 EDT with 5 comments Microsoft has released an out of band cumulative update KB5004760 for Windows 10. The new update fixes an issue with PDF files not opening on the web when using Internet Explorer 11 or similar applications that are based on the 64-bit version of WebBrowser Control. Another issue related to PDFs that the update says it fixes is a rendering problem where the PDF file's background would only be displayed in the color gray when using the Adobe Acrobat plug-in. The update also includes certain improvements to the servicing stack.