Windows should find the KMS server and reset the clock back to 180 days automatically.
The first sign of trouble wasn't the watermark; it was the sudden lack of color. Windows had locked him out of his personalization settings. His favorite high-res wallpaper of the Swiss Alps was gone, replaced by a void of pitch black. He couldn’t even change the taskbar color to match his mood. It was a digital prison of his own making. windows license valid for 180 days remove
slmgr /rearm
Type slmgr /cpky and press Enter.