Trust Microsoft, ignore the rest. ✅
| Tool | Accuracy | Safety | Notes | |------|----------|--------|-------| | | 🟡 Partial – shows key from registry, doesn’t validate | ✅ Safe (reputable) | Local only; no online check | | ShowKeyPlus | 🟡 Shows installed key & OEM info | ✅ Safe (open source) | Windows only | | Online “Key Checker” websites | ❌ Usually fake/scams | ⚠️ Very risky | Many steal keys or install malware | | LicenseCrawler | 🟡 Scans networks – overkill | ⚠️ Detected as hack tool by antivirus | Not for average users |