3493734 - '(407) Proxy Authentication Required' error occurs when connect SAC in AO

Symptom

Error '(407) Proxy Authentication Required' occurs when connecting SAC in AO.
This connection error only occurs in AO, there is no issue connecting SAC directly in browser.

In AO trace, following errors can be found:

|WARN |AoPlugin | Failed navigating to: https://*.cloud.sap/mobileapp/oauth2/api/v1/token #
|ERROR |Con | System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required.
@ System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult, TransportContext& context)
...
|ERROR |Con | Response Info -> Headers: X-Frame-Options: XXX
...
Proxy-Authenticate: XXX, ResponseUri: YYY, StatusCode: ProxyAuthenticationRequired #

Environment

SAP Analysis for Microsoft Office

Product

SAP Analysis for Microsoft Office all versions

Keywords

Analysis Office, Analysis for Office, A4O, Analysis for Excel, A4O, SAP Analytic Cloud, SAC tenant , KBA , BI-RA-AO-XLA , Excel Addin , Problem

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