Title: Failed Authentication
Last modified: June 26, 2020

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# Failed Authentication

 *  [nehemiakhawzol](https://wordpress.org/support/users/nehemiakhawzol/)
 * (@nehemiakhawzol)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/failed-authentication-2/)
 * Whenever i try to connect with Amazon Auto Links i hot the following error:
    
   How to solve tphis? Failed authentication. Error: 401 Unauthorized ; UnrecognizedClient:
   The Access Key ID or security token included in the request is invalid

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [nehemiakhawzol](https://wordpress.org/support/users/nehemiakhawzol/)
 * (@nehemiakhawzol)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/failed-authentication-2/#post-13040314)
 * Including this one:-
    Failed authentication. Error: 429 Too Many Requests ; TooManyRequests:
   The request was denied due to request throttling. Please verify the number of
   requests made per second to the Amazon Product Advertising API.
 *  Plugin Author [miunosoft](https://wordpress.org/support/users/miunosoft/)
 * (@miunosoft)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/failed-authentication-2/#post-13056219)
 * Hi,
 * Please test your keys with ScratchPad ([https://webservices.amazon.com/paapi5/scratchpad/index.html](https://webservices.amazon.com/paapi5/scratchpad/index.html))
   when you get that error message. If you get that error on ScratchPad too, your
   keys might have an issue.
 * The 401 error should be resolved by setting valid keys.
 * The 429 error seems to occur when:
 * – you just signed up for Amazon Associates account and the API keys are not ready
   –
   you haven’t made actual referrals in last 30 days – the request exceeded the 
   API rate limit
 * Anyway, please try testing your keys on ScratchPad first.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Failed Authentication’ is closed to new replies.

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## Tags

 * [amazon affilaites](https://wordpress.org/support/topic-tag/amazon-affilaites/)
 * [amazon associates](https://wordpress.org/support/topic-tag/amazon-associates/)
 * [PA-API](https://wordpress.org/support/topic-tag/pa-api/)

 * 2 replies
 * 2 participants
 * Last reply from: [miunosoft](https://wordpress.org/support/users/miunosoft/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/failed-authentication-2/#post-13056219)
 * Status: not resolved