Update Windows 10 KB5004760 emergency update fixes PDF opening issue

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Microsoft has released an optional out-of-band update for all supported Windows 10 versions to address an issue preventing customers from opening PDF documents using some applications.

The KB5004760 emergency update is available for devices running client editions of Windows 10 versions 2004, 20H2, and 21H1, as well as Windows Server versions 2004 and 20H2.

"An out-of-band optional update is now available on the Microsoft Update Catalog to address an issue in which Internet Explorer 11 and apps using the WebBrowser control might fail to open PDFs," the company says.

"Additionally, a PDF might render as just a gray background when using the Adobe Acrobat plug-in," Microsoft adds in a support article.

Internet Explorer users are only affected by this bug if they toggle on "Enable 64-bit Processes for Enhanced Protected Mode" is enabled in the Advanced tab in Internet Options.

Because KB5004760 is a cumulative update, you will not have to deploy any previous update before installing it.

You can manually download it and install it from the Microsoft Update Catalog. Admins can also import it into Windows Server Update Services (WSUS) manually.
 
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