Many "activator" tools (like KMSAuto or Microsoft Toolkit) found on third-party sites are frequently bundled with trojans, spyware, or ransomware that can steal personal data or lock your files [4, 5].
These tools often modify core system files, which can lead to frequent crashes, the "Blue Screen of Death" (BSOD), or an inability to install critical security updates [6]. Many "activator" tools (like KMSAuto or Microsoft Toolkit)
If you have an old laptop or PC, the product key is often located on a COA (Certificate of Authenticity) sticker on the bottom of the device or inside the battery compartment [10]. You can technically install and use Windows 10
You can technically install and use Windows 10 or 11 without a key indefinitely. While you will see a "Windows is not activated" watermark and lose some personalization features, the system remains legal and receives security updates [11]. supported OS like Windows 11 [8
Since Windows 7 and Windows 8 have reached their , Microsoft no longer sells product keys for them and strongly recommends upgrading to a modern, supported OS like Windows 11 [8, 9].