The Windows Update Standalone Installer (WUSA) is a command-line utility integral to the Windows operating system, designed to facilitate the installation and management of standalone update packages, commonly known as .msu files. Introduced with Windows Vista, WUSA has been a consistent feature...
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In the aftermath of the April 2025 Windows Update rollout, a seemingly innocuous folder named “inetpub” began appearing on Windows 10 and Windows 11 systems worldwide. Confusion reigned—after all, this empty directory, typically associated with web developers and Microsoft’s Internet Information...
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Something strange is happening on the C: drive of millions of PCs worldwide, and it’s not a ghost in the machine. If you’ve recently updated your Windows 11 system and discovered an unfamiliar, empty folder named ‘inetpub’ sitting quietly in the corner like a wallflower at a prom, you’re not...
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Windows 11 continues to surprise its users. The latest April 2025 cumulative update—KB5055523—has introduced an unexpected twist: the creation of an empty "inetpub" folder in the root of the C: drive, even on systems where Internet Information Services (IIS) is not installed. While the folder’s...
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Here is a summary of the original Petri article on the Windows 11 'inetpub' folder security risk:
What happened?
After the April 2025 Patch Tuesday update, a new "inetpub" folder started appearing on Windows 10 and 11 machines.
Microsoft created this folder to help patch a bug (CVE-2025-21204)...
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The Mysterious “inetpub” Folder: An Unexpected Windows 11 Quirk
Windows 11 users have recently encountered an unexpected twist following the cumulative update KB5055523—a seemingly innocuous yet puzzling folder named “inetpub” appearing on the C drive. This odd discovery, highlighted by multiple...
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