Summary: Microsoft has confirmed that the April 2025 Windows security update creates an empty “inetpub” folder on systems, even if Internet Information Services (IIS) is not installed. Users are warned not to delete this folder, as it is part of enhancements for security protections. Deleting the folder may prevent the updates from installing correctly, despite the folder not causing issues according to testing.
Affected: Microsoft Windows 10 and Windows 11
Keypoints :
- April 2025 update creates a new C:inetpub folder, regardless of IIS installation.
- Microsoft advises users not to delete the folder to maintain security enhancements.
- If the inetpub folder exists before the update, the installation may fail.
- The update addresses a security flaw (CVE-2025-21204) related to improper link resolution.
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