Add Proxy Server Mistack error

[Jameslin]

I have install first Veeam Backup，want to add Proxy Server but have error。
I'want to ask how to fix this error？Thanks you !

environment：two VM all new build Windows2016，in same subnet，have close VM firewall，can ping each other，Internet is ok。

error message：
Configure proxy. Error: Proxy connection to server failed: 通訊端連線已中止。這可能是因為處理訊息時發生錯誤、或是遠端主機超過接收逾時，或是基礎網路資源問題所導致。本機通訊端逾時是 '00:00:09.9660000'。 :: 0:00:20
（The communication terminal connection has been aborted. This could be caused by an error in processing the message, or by the remote host exceeding the timeout of reception, or by a problem with the underlying network resources. The local communication terminal is overtime）
error image：
https://pershing-my.sharepoint.com/:i:/ ... A?e=KKYLfE

Can someone help？Thanks for reply.

[Mike Resseler]

Hi Jameslin,

This looks like a communication issue and my first thought would be firewall rules. Ping is not enough. The ports are on helpcenter.veeam.com and then go to Veeam Backup For Microsoft Office 365 manual to find the ports (Can't give you the exact URL at the moment, working on my phone ). If that doesn't solve it, please create a support call, post the support case ID here and the outcome after investigation with our engineers

Thanks
Mike

[Jameslin]

Hi Mike,

Thank you for your reply.
At the same time,I have use mail ask for veeam support,get answer is version ploblem.

Thanks^^
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Regards,
Jameslin

[Mike Resseler]

Jameslin,

I'm not sure that I understand what you mean. What did you need to do to solve the problem?

[Jameslin]

you guessed right!
Veeam Support Say: This Version can't support Add Proxy Server, is knowed issue.
Thanks your reply.