Timetable for KMS Activation and Reactivation
This article applies to: Software Licensing
Under the Key Management Service (KMS), each installed product (Windows and Office) will attempt to check its own activation state on a regular schedule that looks like this:
Install product. On successful installation, a 30-day Grace period begins.
- Product has full functionality during grace period.
- Product attempts to activate through KMS server every two hours.
- On successful activation, move to Licensed state.
- If 30 days in Grace period pass without a successful activation, move to Reduced Functionality state.
- Product has full functionality during licensed state.
- Begin with 180 days remaining in licensed state.
- Product attempts to re-activate through KMS server every seven days.
- On successful reactivation, reset licensed state to 180 days remaining.
- If 180 days in license state pass without a successful reactivation, move to a 30-day Grace period.
Reduced Functionality state
- Users will experience these significant product limitations:
User logins last only an hour. Users will need to log in every 60 minutes.
Premium features such as Aero Glass, ReadyBoost, and BitLocker are not available.
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Technical support providers or network administrators should use the manual activation method. If successful, this will return the product to the Licensed state.