360 Total Security review

360 Total Security, from Beijing Qihu Keji, pairs a free antivirus with PC-care tools, which suits an old PC that is both exposed and slow. The download page says it supports Windows 11 and 10 in 64-bit, and Windows 8, 7 and XP through a legacy build, so XP users can still get it, though not the newest version. The free app scans for viruses, cleans junk and duplicate files, can detect ransomware and help restore locked files, and has a one-click network repair for dropped connections. The standard free version works without an account. Premium costs $35.98 per year for 3 PCs and adds a firewall, driver updater, data shredder, ad blocker and data shield, and removes in-app ads. Two cautions apply. A legacy build gets fewer updates than the current one, and cleanup and driver tools should be used carefully on a machine running software you cannot reinstall.

Who it is for

Owners of slow older PCs who want virus scanning and cleanup in one free app.

Price

Free version; Premium $35.98 per year for 3 PCs; 30-day money-back guarantee.

1 Year (3 PCs) $35.98/ Year
Quoted from the vendor pricing page on November 10, 2026.

Key features

• Free virus scanning that 360 describes as permanently free
• Junk and duplicate file cleanup and storage management
• Detection of ransomware and manual restore of locked files
• One-click network repair for sudden internet loss
• Premium adds a firewall, driver updater, data shredder, ad blocker and no in-app ads

Strengths and weaknesses

• Strength: Download page lists Windows 8, 7 and XP as supported in a legacy build
• Strength: The free version can be used without an account
• Strength: Cleanup tools help older PCs with small, full drives
• Weakness: Windows 7 and XP get a legacy build rather than the current one
• Weakness: Firewall and driver updates need Premium
• Weakness: Ad-free use and priority updates need Premium

Key facts

• Windows support: Win11/10 (64-bit), Win8/7/XP (legacy)
• Premium price: $35.98 per year for 3 PCs
• Account needed: No, for the standard free version
• Money-back guarantee: 30 days

Where it ranks

360 Total Security is No. 5 in our Best Antivirus for Older Windows PCs verdict.