Windows Defender Reported a threat detection immediately after the latest 7-zip update was applied:
"
Detected Trojan: Win32/Wacatac.Clml
Status: Quarantined
Quarantined files are in a restricted area where they can't harm your device. They will be removed automatically.
Date: 29/04/2026 16:03
Details: This program is dangerous and executes commands from an attacker
Affected items: C:\PortableApps\7-ZipPortable\App\7zFM.exe
"
System:
Edition Windows 11 Pro
Version 25H2
Installed on 02/10/2024
OS build 26200.8246
Experience Windows Feature Experience Pack 1000.26100.297.0
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Update your definitions and it should be good. Looks like a temporary issue on Microsoft's part again. Intelligence version 1.449.367.0 updated through 4/6/2026 at 9:23pm shows it clean.
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