Ohook — Permanent Office & Microsoft 365 Activation

Ohook is an Office-activation method that hooks the Office licensing DLL (sppc.dll / SppExtComObj.exe) at process startup and returns a valid licensing response without ever contacting Microsoft. The result is a permanent, fully offline Office activation that survives updates.

Yes — Ohook is the only free method that permanently activates the subscription product 'Microsoft 365 Apps for Enterprise'. Traditional KMS cannot activate Microsoft 365 because it relies on a subscription token rather than a volume license.

Yes. Unlike KMS (which renews every 180 days), Ohook patches the licensing flow so Office reports 'Product Activated' on every launch — indefinitely, with no scheduled task and no background service.

Ohook covers Office 2024 LTSC, Office 2021 LTSC + Retail, Office 2019, Office 2016, Office 2013, Microsoft 365 Apps for Enterprise, Project 2024 / 2021 and Visio 2024 / 2021, plus standalone Word, Excel, PowerPoint, Outlook, Access, Publisher and OneNote.

No — Ohook only works on the C2R (Click-to-Run) build. If you have the Microsoft Store version, uninstall it via Settings → Apps and reinstall using the Office C2R installer before running Ohook.

No. Ohook works fully offline — no KMS server, no Microsoft endpoint, no firewall rules. You can disconnect from the internet entirely before activation.

No. Ohook re-applies its hook on every Office launch by patching the licensing DLL load path. Office updates replace the DLL but Ohook re-injects automatically on the next launch.

Yes. Ohook installs no service, runs no scheduled task, and does not emulate a KMS server. It modifies only the Office licensing DLL load order — no system file changes, no network traffic, lower antivirus profile.

Yes — they are completely independent. Use HWID for permanent Windows activation and Ohook for permanent Office activation. Both ship inside the same KMSAuto.software bundle.

You have the Microsoft Store version of Office, which Ohook cannot patch. Uninstall it and install the C2R edition via the Office C2R installer, then re-run Ohook.

Ohook only modifies the licensing DLL search order. To fully revert, run `cscript ospp.vbs /rearm` from the Office16 install folder — Office returns to its pre-activated state.

Use the volume-license (C2R-VOL) build of Office 2024 LTSC or Microsoft 365 Apps for Enterprise — both deploy cleanly via the Office Deployment Tool and produce the smallest, fastest install that Ohook activates in one click.