Windows Registry Editor Version 5.00

; Created by Sectigo - 2025
; FORCE CROSS-CERTS TO USERTRUST
; Registry file to workaround IIS/Windows inability to specify certificate chains for the TLS handshake
; This file moves the Sectigo R46 and Sectigo E46 self-signed roots to the 'Disallowed' store
; This will force Windows to download the cross-certificates from Windows Update CTL and use those
; KB Article: 

; Move Sectigo R46 self-signed root -> Disallowed
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\AD98F9F3E47D753B65D482B3A45217BB6EF5E438]
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  fd,a6,ed,1f,f4,60,63,df,d2,2d,55,01,8b

; Move Sectigo E46 self-signed root -> Disallowed
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates\EC8A396C40F02EBC4275D49FAB1C1A5B67BED29A]
"Blob"=hex:0f,00,00,00,01,00,00,00,30,00,00,00,83,c2,b9,36,8b,f7,95,54,fa,bd,\
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  e3,ae,ae,fb,a5,1a,ee,ed,d2,fc,c2,03,11,eb,45,5c,60,10,3d,5c,7f,99,03,5b,6d,\
  54,48,01,8a,73