7-Zip 21.04
Released on 2021-11-02
| Version | 21.04 |
| Release Date | 2021-11-02 |
| File Size | 1.6 MB |
| Supported OS | Windows 11/10/8/7/Vista/XP & Windows Server 2022/2019/2016/2012/2008/2003/2000 |
| Status | Old Version |
Download 7-Zip 21.04
1.6 MB · Windows x64
New Features
7-Zip now reduces working CPU threads for compression when RAM is insufficient for large LZMA2 dictionaries.
Can create and check "file.sha256" text files with SHA-256 checksums (compatible with sha256sum).
Context menu commands for SHA-256 files: 7-Zip / CRC SHA / SHA-256 > file.sha256.
New -shd{dir_path} switch to set directory for checking file.sha256 references.
New -xtd switch to exclude directory metadata records.
Performance Improvements
Automatic CPU thread reduction when RAM is insufficient — prevents out-of-memory errors.
Upgrade Guide
- 1
Beta release with SHA-256 checksum file support.
- 2
Improved memory management for large dictionary compression.
SHA-256 Verification
To verify the authenticity of your download, calculate the SHA-256 hash of the downloaded file and compare it with the official checksum on the GitHub releases page.
# Right-click file > 7-Zip > SHA-256
# Or use PowerShell:
Get-FileHash 7z2104-x64.exe -Algorithm SHA256