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outlook is unable to connect to the proxy server (error code 28

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outlook is unable to connect to the proxy server (error... - 4.May2017 1:05:16 AM   
makmz

 

Posts: 7
Joined: 3.Jan.2012
Status: offline
We are trying to configure MS outlook on some external machines but they are giving the following error

ERROR: 'There is a problem with the proxy server's security certificate.The security certificate is not from a trusted certifying autority.

outlook is unable to connect to the proxy server (error code 28).'

Please help to fix it.

Thank and Regards,

Asif.


Post #: 1
RE: outlook is unable to connect to the proxy server (e... - 5.May2017 11:51:13 AM   
Admin

 

Posts: 80
Joined: 23.May2005
Status: offline
If it is a self signed certificate windows/software will complain. You need to install the certificate on lcients so that they trust connections to the proxy.

(in reply to makmz)
Post #: 2
RE: outlook is unable to connect to the proxy server (e... - 7.May2017 4:39:37 AM   
makmz

 

Posts: 7
Joined: 3.Jan.2012
Status: offline
Dear Friend,
Thank you very much for your response.

Could you please elaborate the solution .


BR,
Asif.

(in reply to Admin)
Post #: 3
RE: outlook is unable to connect to the proxy server (e... - 8.May2017 8:05:44 AM   
Admin

 

Posts: 80
Joined: 23.May2005
Status: offline
Try this:
https://blogs.technet.microsoft.com/sbs/2008/05/08/installing-a-self-signed-certificate-as-a-trusted-root-ca-in-windows-vista/

(in reply to makmz)
Post #: 4

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All Forums >> [Microsoft Exchange 2010] >> General >> outlook is unable to connect to the proxy server (error code 28 Page: [1]
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