I Hope this information to help you!

*Program Requirements - Microsoft Trusted Root Program*
https://docs.microsoft.com/en-us/security/trusted-root/program-requirements

*Newly minted Root CAs must be valid for a minimum of 8 years, and a 
maximum of 25 years, from the date of submission.*

El sábado, 9 de octubre de 2021 a las 14:46:16 UTC+2, [email protected] 
escribió:

> I can't find written rule about validity period of CA certificate in CA/B 
> BR or Mozilla policy, so a CA could register a root certificate with 
> notafter date of year 9999(where rfc5280 assigned for no well-defined 
> expiration date) and practically never care about a root certificate 
> being expired. but will this kind of thing actually allowed?
> actually this doesn't sound that bad, as root store is hand-picked and if 
> there was a reason to remove a root certificate(no longer trusted/key is 
> now considered weak) it would removed from store by store update, make 
> automatic expiration not needed and can break things
>
> For intermediate CA's validity period is different can of worm, and I 
> personally think having to manage documentation and crt/ocsp literally 
> forever is enough deterrent to no real CA will attempt.
>

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