Official windows ISO

[NiKiZe]

From non Windows (or emulate non windows) https://www.microsoft.com/en-US/software-download/windows10ISO
This link will ofcourse not work and needs to be regenerated, but it is here as a sample of what it does look like
https://software-download.microsoft.com/db/Win10_21H1_EnglishInternational_x64.iso?t=705982e0-45a1-4926-a609-fc74de826a8b&e=1630323786&h=bdd6746c50df06b8dd1d83963f1d2371

Use

Get-FileHash

1. Download the desired product ISO file and follow the installation guidelines.
2. Launch Windows PowerShell. If you need help finding the location of PowerShell for your operating system, get help here.
3. In PowerShell, compute the hash value for the ISO file you downloaded using the Get-FileHash cmdlet. For example:
   

   Get-FileHash C:\Users\user1\Downloads\Contoso8_1_ENT.iso

4. If the SHA256 output matches the value in the below table, for the product that you downloaded, this confirms that the file has not been corrupted, tampered with or altered from the original.

Arabic 64-bit	E23062AA0BBE76DC213654A1CD435EA458217D0C4A0921DF2B42D17E48F2E45B
Arabic 32-bit	40ACCB7880614712098C375C9A7EF4B40739209DE8B0867EA821E616AAC5DBCC
Bulgarian 64-bit	9B4263524B675E9D242EB9E8C621E000C2B0A7C36B84DD509ECE479B7E77DCCC
Bulgarian 32-bit	2ACB9238FCCBDAA85B9DAFC6B38858E9026D4F83D595595101062EAE11AE4EF8
Czech 64-bit	559EBAA67436F8201C2FD348EFAFB77FC3CF211D69410D983095D23022EB1330
Czech 32-bit	3154B8BF9629F2B3B8E7B5FE87FC86848C62CC9B82E3D227DA3F24A9F60F292F
Danish 64-bit	F2803CC9EA2D50E3CFC0FDF9465E3DEE0682DD34B5BAB4AD03A3C01550BD1F62
Danish 32-bit	E77801BAAE6C2C378F8237B1E7E4E6FF61B44E8A7026DF497FE744077C8ADC86
German 64-bit	CF0DB565A3B186703C244C9B20A1B706020A117F77349A97DF0F2EDC82D10F30
German 32-bit	E1537554B00EE680BD2B10B70C0360977EF5653A3C9B2250D5177BF0500171E5
Greek 64-bit	0A7EBF4FF11B416FD755DFB5E00DC5256BA13FBD014B490213A6192B5455F72A
Greek 32-bit	7E9F7C2DAA9AB8ABAAA497B9322FCAC695CD60FB487B546C4B840E17939E1C2C
English International 64-bit	CB8731A17350B2F61AD1C059FC16FD6348530C25E43F631F2691768F767F75C3
English International 32-bit	6781CA16113DFE9B1117809923FFC7D390926C14F45889F80293AC70E1E8F87C
English 64-bit	6911E839448FA999B07C321FC70E7408FE122214F5C4E80A9CCC64D22D0D85EA
English 32-bit	65CFEAA1ED3375012A4F11C7DEF5A2544B4338094760E2A9A79169136BB4A6BD
Spanish 64-bit	89A7B6D630CCD20D0998EDFC42EB270ED0EF1B0F5A68DBBE10AC0C7D083559EA
Spanish 32-bit	6406BF564FF9A59356A40D8225B969A6A70EF799AFE9E29C62F2487602D0BA59
Spanish (Mexico) 64-bit	0FD08F720E5636C2FC4843882DB418EFB0106D700D06249A9FC98E8F5E9FE963
Spanish (Mexico) 32-bit	3776E7B3B4531DB0C423976DE0A4C5AEB43F0E3ABDDF87BD3DD260874E55D5A2
Estonian 64-bit	07138D331F9E23909DFE8525164681FBC8FF3ECDA3EDD751CCDC8A1A31C9560E
Estonian 32-bit	CE84532926EAEF3AAB9BC53C17B1C8B0A625EFDF7BFB65BC571883349CB4D64F
Finnish 64-bit	83C91E111D38487C8C7ED68E2A3AF80CC6818589682420D81BA0B3943F12A463
Finnish 32-bit	098E83B68F62B5E6CC690972572C094033CC6FCF2EEEDE93B3A9DA28336A83DD
French Canadian 64-bit	5E4F856B3E3090078E08E3AF0DCC3812DDE59DDA08E03EE008B0400553A76CFE
French Canadian 32-bit	662A82BFCCCF808D047D9DF8690188F5C1D11DA3946849F9E727D3324EC6C561
French 64-bit	10C5D4817C91801E421F0C1238587396DA0288305F4AF8407D6D598A26C1DE67
French 32-bit	8C205627A5B691238EF3FC5A1BA09B958DACE1C3C4101DFA252BA7A4F1700E85
Hebrew 64-bit	C8C212CEC5BF0D61F886B4D7756B645D80A1946FE1CBCE27641FE4806332AF98
Hebrew 32-bit	202F1538AC99DAEB3C4DD080E447694EBA6F269E5FED0E184502BD4AC7FF0CA6
Croatian 64-bit	89F648824370C2A68956ECCF7C5BE542348A9AA1066DB14E5198E60E95E6254F
Croatian 32-bit	F8C68A5E7A800D50E3D9798071B5EDD554CD2E66322ED2C27404F9CBB15055DA
Hungarian 64-bit	63D10EF9176C3016CEB1F55BD7F7CA24C6118365775A7750D0C899A8038E6F39
Hungarian 32-bit	8DCEA8ED5437934DA6D119FC234C468783FAA361363BB41A874A1B991C8F34BC
Italian 64-bit	E35FDA8EB7A943D5A713FC32E7BFA1A060D770B79FEEAC21FB7DE4E7AE421901
Italian 32-bit	D6F9CB7939FEB0E0790FD012BCA4B554C09119B9732A30B0A96180117C019275
Japanese 64-bit	D6C844C1292663222211062B929278E69F042D60E4633BAA48C13A948629D9A2
Japanese 32-bit	01CCAEBD70F159F4DA77FE43A70575205E75DFAA9C30C5264144BB02AF4C0663
Korean 64-bit	B7F5C73A3D2E4245882F3CAF79993593466476693B19C0EB39F29D1C5FD4160E
Korean 32-bit	C8911D587D04D9C9AE58A94C847239FB6D23F73834FDC8E34FD6B576BD1DB251
Lithuanian 64-bit	D3D174EB2D195D850DFFDC66F178C06E90FEA0CDF3F2A80A48EFFECEAF196D50
Lithuanian 32-bit	01903797334DB6FB0908D093ED284EDE76E3EB04B864B46C013C43119B58D57C
Latvian 64-bit	C37F55E8637FD57E8AF0E08C34905D393EB561E1F23240F76C8760FABBB9FC78
Latvian 32-bit	7F629EC5948065C71A6186525993D12BA7C63BE47050597AF3EEF10433016D11
Norwegian 64-bit	68DCCF1396213231F74210BD945B2B6D44BD016CB7A290A4363B2940CAEF6700
Norwegian 32-bit	33C268766B13B335D0BF1DB6F8984659DF1BC8DDEC497A16CD674DA9AE1CD5E6
Dutch 64-bit	F825AD1F8D3FB60961AD833125B7DE4827B8B7BBA6CF6394EFDB5B3892685CC7
Dutch 32-bit	47D11AC24DC2AA8C3038D7F81744EB83B4E9DCF1F1BCD6C66092D9117CE42468
Polish 64-bit	78F66EC7D9D4873B3D0886AB83B76E5EAC946D9B17BCFD9D9718F4A6C1E9082A
Polish 32-bit	8FC2326D4951088C32F17825D97D99D4ED9D17F2739C0B1F318B416F82419EE0
Brazilian Portuguese 64-bit	6C6ADBA1B5F7E0D7047E846AC31EFF1A78A644BC35435BDB50263AF7C865D9E4
Brazilian Portuguese 32-bit	21F4FFD405D4C10EA87F0C66F9B1883FB099E259FEEFA4B16892AA0F42A14552
Portuguese 64-bit	A52AC12059090022B0177FE4CA953C657D4341F8B353B63F25A895BD28BE1E00
Portuguese 32-bit	E102414AE218373CE0D6EF66D9082BB3BA738A44887328931B0EA9FBEC68E4EA
Romanian 64-bit	A8AF0EED548A354317C563E00E1EF37C7B608F18350B1A74C1F46032707496AA
Romanian 32-bit	F58999FAFA5660A553FCEAC2553E192701717901CA065346A6B9E2512D277E32
Russian 64-bit	CF25460E9A1235FCF7B81944979817D9469E7BDC174E537CDD24FECB260E5B67
Russian 32-bit	B285529D9DABBDC6B6ED5467D714AC4881A3FFF5D9EE5657B382D52E58EC60BB
Slovak 64-bit	B826953643FEDD02B6085BD347DB9C33EA2EA66CE37E2AD923C5FC18CC520B84
Slovak 32-bit	268EBB7C38700CD9DDBEA52D4850E37076347B91D5826BEFB87892DB19D34FDC
Slovenian 64-bit	94E8B2C827DBE3741A12C7857FECF4068078F3B691D38FAA6B069DA286ADD346
Slovenian 32-bit	620226047F2873DB00AFEA52770B823A65F561D51E42A5F8380DDE37AD686217
Serbian Latin 64-bit	05C46C11FB90BB47F31FE1CA71F48AE6C622C5DD92238B1D363940A36714D858
Serbian Latin 32-bit	2BBC779497A349D7AB5C238E9A4BA25F0856A78494DE1F0E15F06B41DDD6A4A1
Swedish 64-bit	E11C830CE0BFC730223B3C021BCFB8924E1F0EA346F6A9057F6CA9912C35ACE8
Swedish 32-bit	7766F11719813622D1E7292B55C9BE5F120475DF7A0FE98DABD926AFF79CAABD
Thai 64-bit	F59BF958812D1F56D8958D04E0CCFC36BCFDEFD7C031B946CA316067B50516C4
Thai 32-bit	22ACF304A6B65EA2561A736C7205C31BAEABA0FA8DEE2F36D7176F74E2397D26
Turkish 64-bit	FEBEF56AFABB322A4567DF726B49AFFB3E96E8A5B0C7712C0F92307E9026342A
Turkish 32-bit	6D4C72033161F4945FCAEEA4AB61085CF88F86AA09DCCEDC03121C8FFA2AEE77
Ukrainian 64-bit	BF2ED748E7004466A342EF6E0B8722297BF688748BA857E4E516CF1D20765883
Ukrainian 32-bit	5FA60CA6FDEC82A627CBE0F60C45AE7BE36535281555ABD426FCB03B80DB23F3
Chinese Simplified 64-bit	DF88FFFE7E4763A7A01CF2F6546C83A864DA3E4DA35C78EC0838E2339371DB8F
Chinese Simplified 32-bit	46A7F84E5E4899D8B357391698800E1601096FBD16F3E439B44A27F93EFEBF3F
Chinese Traditional 64-bit	12CD6874CB2FEBF1B8666BE8EDC010F87762230EEDF9CC1D75888C9D6C173AD0
Chinese Traditional 32-bit	50C878B9AC24F46E1FEB79E335E9F01A436F2DFA1CCAC6EB2F657C6CC7D42F19

https://thewindowsupdate.com/2021/05/21/windows-10-21h1-may-2021-iso-file-checksums/