Microsoft has released an optional out-of-band update (KB5004760) for all supported editions of Windows 10 to address an issue that prevents customers from opening PDF documents using certain applications.
See also: Windows 11: Microsoft needs to prove it's more than Windows 10.5
Emergency update KB5004760 is available for devices running client versions of Windows 10 versions 2004, 20H2, and 21H1, as well as Windows Server versions 2004 and 20H2.
Internet Explorer users are only affected by this bug if they enable the “Enable 64-bit Processes for Enhanced Protected Mode” option on the Advanced tab in Internet Options.
Because KB5004760 is a cumulative update, you won't need to deploy any previous updates before installing it.
See also: Loud noise in Windows 10: Microsoft fixes the bug
You can manually download and install it from the Microsoft Update Catalog. Administrators can also manually import it into Windows Server Update Services (WSUS).
Microsoft is also providing workarounds for affected customers who are unable to immediately install the KB5004760 update on Windows 10.
To make sure you can open a PDF on your device even though it's affected by this error, you can:
- Open the PDF file directly in Adobe Acrobat instead of IE11 or the affected application.
- For IE11 only: Disable the setting in the Advanced tab of Internet Options called Enable 64-bit Processes for Enhanced Protected Mode.
See also: Windows 10 Cumulative Update KB5003690 with new fixes
In related news, the Windows 11 announcement mentioned that Internet Explorer will be disabled in Windows 11 as the new Chromium-based Microsoft Edge now includes IE Mode.
Information source: bleepingcomputer.com
