Issues installing caused by Windows Security

[tadghh]

Issuing installing Msys2 error 254
this is for SEO

[Biswa96]

Have you tried to exclude the installation directory in antivirus or antimalware software?

[tadghh]

This issue was encountered here too
appveyor/ci#3777

Workaround

Script

See this link, it looks like it disables the required protections for only Msys2

Manual

Go-to Windows Security -> App and browser control -> Exploit protection

Need to keep the following disabled

• Force randomization ASLR
• Randomize memory allocations (Bottom-up ALSR)
• Validate exception chains (SEHOP)
• Validate heap intergrity

Notes

requiring systems to disable these settings could harm the adoption of Msys2.

[MehdiChinoune]

AFAIK ASLR is not enabled by default on Windows.

[tadghh]

AFAIK ASLR is not enabled by default on Windows.

This is correct, however with this "issue" the user base who require those features are being cut off imo.

[MehdiChinoune]

This is correct, however with this "issue" the user base who require those features are being cut off imo.

We can do nothing about it, While MinGW-w64 (native Windows) packages were built with ASLR enabled https://www.msys2.org/news/#2021-01-31-aslr-enabled-by-default. but unfortunately CygWin (Which MSYS environment is based on) has some issues with it.
There were some reports like yours before, like this msys2/MSYS2-packages#3925
see also:
https://cygwin.com/pipermail/cygwin/2020-March/244106.html
https://cygwin.com/pipermail/cygwin/2020-August/245973.html

[tadghh]

This is correct, however with this "issue" the user base who require those features are being cut off imo.

We can do nothing about it, While MinGW-w64 (native Windows) packages were built with ASLR enabled https://www.msys2.org/news/#2021-01-31-aslr-enabled-by-default. but unfortunately CygWin (Which MSYS environment is based on) has some issues with it. There were some reports like yours before, like this msys2/MSYS2-packages#3925 see also: https://cygwin.com/pipermail/cygwin/2020-March/244106.html https://cygwin.com/pipermail/cygwin/2020-August/245973.html

Hopefully someday it will be fixed :)