Windows deactivated out of the blue !  

Computer Type: PC/Desktop
System Manufacturer/Model Number: Custom self built
OS: 64-bit Windows 11 Pro for Workstations
CPU: Intel i7-8700K 5 GHz
Motherboard: ASUS ROG Maximus XI Formula Z390
Memory: 64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
Graphics Card: ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
Sound Card: Integrated Digital Audio (S/PDIF)
Monitor(s) Displays: 2 x Samsung Odyssey G75 27"
Screen Resolution: 2560x1440
Keyboard: Logitech wireless K800
Mouse: Logitech MX Master 3
PSU: Seasonic Prime Titanium 850W
Case: Thermaltake Core P3 wall mounted
Cooling: Corsair Hydro H115i
Hard Drives: 1TB Samsung 990 PRO M.2, 1TB Samsung 980 PRO M.2, 6TB WD Black WD6001FZWX 8TB WD MyCloudEX2Ultra NAS
Internet Speed: 1 Gbps Download and 35 Mbps Upload
Browser: Google Chrome
Antivirus: Windows Defender and Malwarebytes Premium
Other Info: Logitech Z625 speaker system, Logitech BRIO 4K Pro webcam, HP Color LaserJet Pro MFP M477fdn, APC SMART-UPS RT 1000 XL - SURT1000XLI, Galaxy S23 Plus phone

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Computer Type: Laptop
System Manufacturer/Model Number: HP Spectre x360 2in1
OS: 64-bit Windows 10 Pro build 21390
CPU: i7-1065G7 3.9 GHz
Memory: 16 GB LPDDR4-3200
Graphics Card: Intel Iris Plus
Sound Card: Intel SST
Monitor(s) Displays: 13.3" 4K UWVA AMOLED multitouch
Screen Resolution: 3840 x 2160
Hard Drives: 512 GB PCIe NVMe M.2 SSD
Browser: Google Chrome
Antivirus: Windows Defender and Malwarebytes Premium