| Feature | Actual SP1 (Official) | Convenience Rollup (Unofficial "SP2") | | :--- | :--- | :--- | | | February 22, 2011 | May 17, 2016 | | Microsoft KB | KB976932 | KB3125574 | | Standalone installer | Yes ( windows6.1-KB976932-X64.exe ) | Yes (requires SP1 pre-installed) | | Security updates included | Only up to 2011 | Up to April 2016 | | Official branding | "Service Pack 1" | "Convenience Rollup" |
| Risk Factor | Severity | | :--- | :--- | | No new security patches | (unpatched CVEs since 2023) | | TLS 1.3 missing | High (broken modern HTTPS) | | Driver compatibility | Degrading (no new WHQL drivers for W7) | | Antivirus support | Most vendors dropped W7 in 2024-2025 | windows 7 professional 64 bit service pack 2 download
A: Because SP2 was never officially declared. The OS version remains 6.1.7601 (SP1). | Feature | Actual SP1 (Official) | Convenience