To run cmd.exe as administrator, enter the following command:Īt the command prompt with administrative rights, you can continue with manual KMS activation. This will start a command-line interface prompt without administrative rights. In this case, to perform the KMS activation, enter the path into Internet Explorer: When the 30 day grace-period has expired, Windows is running in “Reduced Functionality Mode“, only the Internet Explorer can be called.
This error can usually be resolved by a BIOS update.
The KMS activation expect here a so-called “Windows marker” and fails if it is corrupted or not found. Such BIOS version contains an invalid ACPI_SLIC table. This key is sometimes referred to as the KMS client key, but it's formally known as a Microsoft Generic Volume License Key (GVLK). Computers that activate with a KMS host need to have a specific product key. on right mouse click.Įrror 0xC004F074 (“The Key Management Service (KMS) is unavailable”): In most cases it refers to incorrectly set time or the time zone.Įrror 0xC004F035 and 0xC004F059: Especially for computers that were originally acquired with an OEM operating system, in this case the KMS activation is prevented by computer's BIOS. Install a product key Generic Volume License Keys (GVLK) To use KMS, you need to have a KMS host available on your local network. The option Run as administrator is available e.g. For manual activation, you must run the Command-Line Interface (cmd.exe) as administrator.