I get 401 Your authentication failed, my application has worked for 2 years.

[matth3w]

I have an old link request application which i have restarted. I have regenerated the api key, however i get 401 Your authentication failed on request.

The test signature works and returns my account no.

Here is my request:

http://lsapi.seomoz.com/linkscape/links/www.screwfix.com%2F?AccessID=member-12345678&Expires=1357316478&Signature=12345678910&Scope=page_to_subdomain&Sort=page_authority&SourceCols=133982846973

I have replaced my memberID and signature with dummy data to protect my credentials. Is my request string correct?

Also where can i get the expiry parameter?

[ideaevolver]

We had this issue when we moved from staging to production.  Worked fine on staging, but not on production.

It ended up the clock on one of our production servers was 6 minutes behind.  This caused the expiration to error out.  Immediately we increased the expiration, and ultimately set the proper time on the server.

This resolved all issues relating to the following error:

401 Error - Your authentication has expired. Re-send your authentication and try again. For more information on signed authentication, see: http://apiwiki.moz.com/signed-authentication

[matth3w]

I have solved this issue