UnknownError When creating lamba function

Question

Hi all 
I got the UnknownError alert when creating lambda function.
My console log like this:
awsc-head.js:2    
       POST https://lambda.us-east-1.amazonaws.com/2015-03-31/functions 403 (Forbidden)

Request URL:
        https://lambda.us-east-1.amazonaws.com/2015-03-31/functions
Request Method:
        GET
Status Code:
       403 Forbidden

I am using root account and I also tried to switch to another different region but It still not resolve issue.
Appreciate anyone can help me
Thankss

Answer

Hello.

Is it possible that it is restricted by AWS Organizations SCP or something?  
If there are no restrictions in SCP, there may be a problem with your account.

AWS may occasionally limit AWS services based on account usage.  
Therefore, please contact AWS Support by opening a case under "Account and billing".  
https://docs.aws.amazon.com/awssupport/latest/user/case-management.html

Answer

I am experiencing the same issue. Yesterday my lamdas worked and today they return 500 internal server error. When I go to AWS console to lambda functions dashboard I see "UknownError". In the network tab I see 403 response to functions endpoint.
![Enter image description here](/media/postImages/original/IMVUpQNLtxT8OhSS1Kg_Oi9w)

"UnknownError" guys, seriously? How to debug this single-word error without paid plan when I can't ask support about it?
My only guesses is that my root account doesn't have MFA. I'll try to set it.

UnknownError When creating lamba function

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