Cisco DevNet FMC REST API Sandbox "User authentication failed."

dogemaster — Wed, 30 Nov 2022 04:24:28 GMT

I am trying to use the FMC rest api using the always on sandbox, but I am unable to authenticate myself to generate a token. I have tried using postman and a custom script. Both return a 401 error (body shown below). Logging into https://fmcrestapisandbox.cisco.com/api/api-explorer/ with the same credentials work just fine.

{

"error": {

"category": "FRAMEWORK",

"messages": [

{

"description": "User authentication failed."

}

"severity": "ERROR"

}

I've made sure:
1) Certificate verification is turned off
2) Basic Auth is turned on with credentials from devnet sandbox email
3) POST method to https://fmcrestapisandbox.cisco.com/api/fmc_platform/v1/auth/generatetoken

Any help would be much appreciated

Re: Cisco DevNet FMC REST API Sandbox "User authentication failed

Alexander Stevenson — Fri, 02 Dec 2022 16:55:54 GMT

Hi @dogemaster,

It's strange, right? For me, in Postman, it returns a 204 message, so no token, nothing, is returned.

I found a workaround, though.

I had Postman construct a cURL request and added the -v tag to get details. In that verbose response, you will find the X-auth-access-token! It will also include the domainUUID and other values, which are needed for many requests.

Plug that into Postman and send the GET request successfully.

topic Cisco DevNet FMC REST API Sandbox "User authentication failed." in DevNet Sandbox

Cisco DevNet FMC REST API Sandbox "User authentication failed."

Re: Cisco DevNet FMC REST API Sandbox "User authentication failed