Access when all Users Blocked

[shockotechcom]

Guys, say I make a mistake in my conditional access polices thus blocking all users from the sign-in to the tenant. How to recover? Can support access in such scenarios? 

[#2]

In that case, you need to contact Microsoft support through phone:
https://docs.microsoft.com/en-us/microsoft-365/admin/contact-support-for-business-products?redirectS...

But as a general rule, always setup an emergency account that is excluded of all policies.
https://365bythijs.be/2020/02/10/best-practices-for-emergency-accounts/