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Opening 7zip archive with invalid win32 date #168

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opened 2026-01-29 22:07:43 +00:00 by claunia · 0 comments
claunia commented 2026-01-29 22:07:43 +00:00
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Originally created by @Thritton on GitHub (Apr 28, 2017).

Hello,
Sharpcompress library is very good, thank you for it.

I have a problem with opening 7z achives where one of file has invalid modified date (e.g. 27.2.27586) (These archives are generated automatically from other system I cannot access).
When such file is in 7zip archive, ArgumentOutOfRangeException is thrown during getting entries. and file cannot be processed further:

using (var archive = ArchiveFactory.Open(f))
{ 
var files = archive.Entries.Select(x => x.Key).ToList();
}

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll
Additional information: Not a valid Win32 FileTime.

Zip archives with such file work ok (date is ignored).
Is it possible to ignore invalid dates in 7z archive as well?

Thank you

Originally created by @Thritton on GitHub (Apr 28, 2017). Hello, Sharpcompress library is very good, thank you for it. I have a problem with opening 7z achives where one of file has invalid modified date (e.g. 27.2.27586) (These archives are generated automatically from other system I cannot access). When such file is in 7zip archive, ArgumentOutOfRangeException is thrown during getting entries. and file cannot be processed further: ``` using (var archive = ArchiveFactory.Open(f)) { var files = archive.Entries.Select(x => x.Key).ToList(); } An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll Additional information: Not a valid Win32 FileTime. ``` Zip archives with such file work ok (date is ignored). Is it possible to ignore invalid dates in 7z archive as well? Thank you
claunia added the bug label 2026-01-29 22:07:43 +00:00
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Reference: starred/sharpcompress#168
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