Windows 10: Activation Error 0xC004F074 - KMS Key Installed

I have an 2nd hand HP computer with Windows 10 Pro preinstalled, it does not activate with 0xC004F074 (not the same code with "licensing status reason" below) code. The installed key is Windows 10 Pro KMS key. There is no COA sticker or Windows sticker on the computer. A few weird things related to installation of Windows: Windows is installed in BIOS mode. HDD is initialized with MBR.There is no OEM partition.There is a recovery partition but it is only 848 MB and does not have tools to reinstall/factory reset windows. Only reset this pc, advanced startup, command line etc. but no refresh this pc.MS Office 2010 also gives 0xC004F074 error code each time I launch it. According an MS website that I don't remember the address of, if office is installed a KMS key and cannot find a server for 25 days, office locks itself but if it finds one, activates, then cannot find the KMS server for 6 months, office deactivates but does not lose functionality. Is there a chance to activate Windows if I insert the generic key? My priority is to be able to activate windows if I ever upgrade (perhaps to 11?) or reinstall windows because windows and office are currently usable. Activation Diagonostic Tool report: Code: Tool Version: 10.0.19041.789 Licensing Status: In Notification Licensing Status Reason: 0xC004F056 Local Genuine State: Invalid Licence Local Genuine Result P: 0 Last Online Genuine Result: Grace Time Minutes: 0 Total Grace Days: 0 Validity Expiration: Active Partial Product Key: T83GX Active Product Key Pid2: 00331-10000-00001-AA140 O S Version: 10.0.19043.2.00010100.0.0.048 Product Name: Windows 10 Pro Processor Architecture: x64 Edition Id: Professional Build Lab: 19041.vb_release.191206-1406 Time Zone: Turkey Standard Time(GMT+03:00) Active Sku Id: 2de67392-b7a7-462a-b1ca-108dd189f588 Active Sku Description: Windows(R) Operating System, VOLUME_KMSCLIENT channel Product Uniqueness Groups: 55c92734-d682-4d71-983e-d6ec3f16059f Active Product Key P Key Id: 08e404fb-41f3-77ac-59ef-6e9f2d3f499d Active Product Key Pid Ex: 03612-03311-000-000001-03-1055-19042.0000-3152020 Active Product Key Channel: Volume:GVLK Active Volume Customer Pid: Offline Installation Id: 660752628854922503425643742406772709116412464131608586307500246 Domain Joined: false Computer Sid: S-1-5-21-1170574233-2816010542-3065363036 Product L C I D: 1055 User L C I D: 1055 System L C I D: 1055 Code Signing: SIGNED_INFO_PRS_SIGNED Service Available: true Oem Marker Version: Oem Id: Oem Table Id: O A3 Product Key: Activation Scenario Code: Product Key Code: Manufacturer: HP Model: 20-c081nt Install Date: 20201110224905.000000+180 Result: PASS Tampered Items: Server Props: 0xc004f200

:)

 

When trying to activate you get 0xC004F074 with description "The Key Management Server (KMS) is unavailable"

When trying to activate you get 0xC004F074 with description "The Key Management Server (KMS) is unavailable"

I have been running windows 10 pro for 4 years with an active license. It is telling me I have to activate

 

Windows Activation. Error code: 0xC004F074

Activating Windows(R), Core edition
(58e97c99-f377-4ef1-81d5-4ad5522b5fd8)...
Error: 0xC004F074 The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted.please see the Application Event Log for additional information.

 

i'm using a custom kms server and everytime I try to activate it gives me an error (0xC004F074) although the server is working fine on other machines

i'm using a custom kms server and everytime I try to activate it gives me an error (0xC004F074) although the server is working fine on other machines