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[ANNOUNCEMENT] New package: windows-default-manifest-6.4-1

Hi folks,

I just uploaded windows-default-manifest-6.4-1.

This adds the OS GUID for Windows 10 to the default manifest file.

This package contains nothing but a default application compatibility
manifest, which gets linked in by GCC by default, and which is supposed
to claim compatibility with the latest Windows versions available at the

Adding such a manifest got necessary due to a change in Windows 8.1.  On
earlier OS versions, applications without manifest were treated as
compatible with the current OS.  Starting with Windows 8.1, an
executable without manifest is treated as being compatible only with the
oldest supported OS version of the OS compatibility layer.

That means, all applications without manifest are running in a Window
Vista compatibility layer on Windows 8.1.  This affects all Cygwin
executables to date.  By adding the default manifest to newly built
packages, we're slowly getting to run our executables with full OS

This package is in the "Base" category, so it will be pulled in by
default.  The version number reflects the OS kernel version supported
by this manifest (6.4 == Windows 10).

Keep calm and carry on,

Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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