7-Zip Enhanced - Community Fork
7-Zip Enhanced is a third-party modification of official 7-Zip. While many versions are safe, they are NOT from Igor Pavlov (original 7-Zip developer). Download only from trusted sources and verify digital signatures to avoid malware.
7-Zip Enhanced Edition (also called "7-Zip ZS" or "7-Zip Modified") refers to various community-maintained forks of the official open-source 7-Zip archiver. These enhanced versions typically add features like additional compression formats, improved UI themes, batch processing improvements, or optimized algorithms not yet included in Igor Pavlov's official release.
Because 7-Zip is open-source (GNU LGPL license), developers can legally modify and redistribute it. Popular enhanced versions include "7-Zip ZS" (Zstandard support), "7-Zip Portable" (PortableApps), and various themed editions. These forks add features like: Brotli/Zstandard/LZ4 compression, drag-drop improvements, context menu customization, dark themes, and faster extraction algorithms. However, being unofficial means they lack the rigorous security auditing of the official release.
Quick Fact: The most legitimate enhanced fork is "7-Zip ZS" by developer mcmilk, which adds modern compression algorithms (Zstandard, Brotli, LZ4/LZ5) that achieve better speed/ratio tradeoffs than LZMA2 for certain file types. Available on GitHub with full source code. However, the official 7-Zip from 7-zip.org remains the safest choice for most users.
It depends on the source. Legitimate forks like 7-Zip ZS from GitHub (mcmilk) are generally safe. However, many fake "enhanced" versions bundle adware, browser hijackers, or malware.
Legitimate enhanced versions are NOT viruses, but many fake versions exist. Only download from known sources: GitHub (mcmilk/7-Zip-zstd), SourceForge (verified projects), or PortableApps.com.
certutil -hashfile filename.exe SHA256 on Windows.Red Flags - DANGER: ⚠ <strong>MAJOR WARNING:</strong> Many fake "7-Zip Enhanced" installers bundle PUPs (potentially unwanted programs), browser hijackers, adware, or crypto-miners. Red flags: downloaded from CNET/Softonic-style sites, installer is larger than 5 MB, includes bundled toolbars/browser changes, requires unusual permissions, or lacks source code availability. <strong>ALWAYS use official 7-Zip from 7-zip.org unless you specifically need features only in verified forks.</strong>
7-Zip Enhanced runs when you use it to compress or extract files, identical to standard 7-Zip behavior.
Reasons it's running:
For most users, uninstall enhanced versions and use official 7-Zip from 7-zip.org. Enhanced versions are only needed for specific advanced features.
Issues specific to 7-Zip Enhanced editions:
Quick Fixes:
1. Uninstall enhanced version and use official 7-zip.org release
2. If keeping enhanced: Verify it's from GitHub.com/mcmilk/7-Zip-zstd
3. Scan with Malwarebytes if you suspect bundled adware
4. Use standard .7z or .zip formats for maximum compatibility
5. Check digital signature: Properties → Digital Signatures
6. Compare file hash with official release page before installing
Legitimate forks like 7-Zip ZS from GitHub (mcmilk) are generally safe for advanced users. However, many fake "enhanced" versions bundle malware. Most users should stick with official 7-Zip from 7-zip.org.
Enhanced versions add features not in official release: Zstandard/Brotli/LZ4 compression, dark themes, UI improvements, batch processing. Official 7-Zip is more stable, secure, and compatible.
Only if you specifically need Zstandard compression or other enhanced features, AND you download from verified GitHub source (mcmilk/7-Zip-zstd). Otherwise, use official 7-Zip for safety.
Yes, if downloaded from unofficial sites. Many fake "enhanced" installers bundle browser hijackers, adware, or PUPs. Only download from GitHub (verified forks), PortableApps.com, or official 7-zip.org.
Yes, 7-Zip ZS by mcmilk (GitHub.com/mcmilk/7-Zip-zstd) is a legitimate open-source fork adding Zstandard compression. However, it's still third-party - official 7-Zip is safer for most users.
Settings → Apps → Find "7-Zip Enhanced" or "7-Zip ZS" → Uninstall. Then download official 7-Zip from 7-zip.org. If enhanced version installed adware, scan with Malwarebytes.
Either false positive for rare legitimate forks, or accurate detection of bundled PUPs/adware in fake versions. Verify source (should be GitHub or PortableApps), check VirusTotal, or switch to official 7-Zip.