Hello Danial, I am using an account which I believe is MCC, with access level configured as "Administrative Access". I work for a media agency and we handle many client accounts. I have also tried with the "Client Manager"account we use, which is configured with "User interface and API" access type. They both fail with the same error.
In the meantime, since the .net environment didn't offer any more details besides "(500) Internal Server Error" I sent the request throgh the OAuth playground. The error persists, but I got a response with additional xml, as you asked, which might be useful: HTTP/1.1 500 Internal Server Error Content-length: 219 X-xss-protection: 1; mode=block X-content-type-options: nosniff X-google-cache-control: remote-fetch -content-encoding: gzip Server: GSE Reason: Internal Server Error Via: HTTP/1.1 GWA Cache-control: private, max-age=0 Date: Wed, 09 Jan 2013 10:25:44 GMT X-frame-options: SAMEORIGIN Content-type: text/xml; charset=UTF-8 Expires: Wed, 09 Jan 2013 10:25:44 GMT <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><soap:Fault><faultcode>soap:VersionMismatch</faultcode><faultstring>INVALID_VERSION</faultstring></soap:Fault></soap:Body></soap:Envelope> Any ideas about this INVALID_VERSION thing? Thanks again for your kind support. Best regards, Bernardo > >> -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and discussion group: http://adwordsapi.blogspot.com http://groups.google.com/group/adwords-api =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en