Caution: Uninstalling without booting Thawed first will cause the uninstaller to fail, requiring a clean OS install.
Q: My "Permanent" license shows "Evaluation Mode."
A: You likely entered a generic key. Uninstall (using the DFServ.exe /uninstall command from Safe Mode) and re-enter your paid perpetual key.
Q: Windows Update fails to install.
A: You cannot update a Frozen drive. Temporarily boot "Thawed" using the Boot Control menu (Ctrl+Alt+Shift+F6 -> Boot Thawed), run updates, then reboot back to Frozen. Deep Freeze Standard Edition 7.51.020.4179 With Permanent
Q: Can I remove Deep Freeze permanently? A: Yes. Open the configuration, click "Boot Thawed," reboot, then run the uninstaller from Add/Remove Programs. You must disable the "Frozen" state first, or the uninstall will revert.
Using legacy software in a modern environment creates a "Freeze/Thaw" conflict. Windows 10/11 updates frequently. If a machine is Frozen, the update attempts will fail upon reboot, potentially causing update loops or corrupting the Windows Update database. Managing this on v7.51 requires manual intervention, negating the "zero maintenance" benefit of the software. Q: My "Permanent" license shows "Evaluation Mode
If you need to install new software or run Windows Updates, you must "Thaw" the system, perform the updates, and then "Freeze" it again.
Students constantly click random links, delete system files, or change settings. With Deep Freeze, every login brings a pristine desktop. The permanent license means no annual budget re-approval. If you need to install new software or
Remove viruses, cheating tools, and unauthorized mods instantly on restart—without reimaging dozens of drives.
| Feature | Deep Freeze 7.51.020.4179 (Permanent) | Deep Freeze Cloud (2025) | Reboot Restore Rx | |--------|----------------------------------------|--------------------------|-------------------| | License Model | Perpetual | Annual subscription | Freemium / Paid | | Internet required for activation | No (offline) | Yes | No | | Cloud management | No | Yes | No | | Windows 11 support | Partial (compat mode) | Full | Full | | Resource usage | Very low | Moderate | Low | | Cost (one PC) | One-time ~$50-80 | ~$4/month | Free version available |
Verdict: If you don’t need cloud features and want a low-maintenance, permanent solution for legacy hardware, version 7.51.020.4179 is ideal.
Before installing Deep Freeze, ensure your machine is exactly as you want it forever.