Outlook & WPAD Proxy Failover

Question

Hi,

In our company, we use wpad autoconfig to connect computers to Internet.
We use pac file capabilities to failover to another proxy server when the first one is down by using :
...
{
return "PROXY myproxy01.domain.local:8080; PROXY myproxy02.domain.local:8080";
}
...

No problem with our browsers, they switch to proxy02 when proxy01 is not available almost immediately.
But Outlook (2016-2019) keeps disconnected : it reconnects only when proxy01 is up again or if we hard set proxy02 in the OS.

Has anyone else had to deal with this problem?

Answer 1

Hi @WebGTA ,

Welcome to our forum!

According to your description, i understand that you have encountered issues about proxy. Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client. Based on my search, i found the below related article may be useful:

Proxy server bypass processing of Microsoft 365 network traffic

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