outlook 2013 always gets old settings for Exchange proxy after restart the pc. Where can i delete them.

registry sounds interessting for it is only 1 Notebook making problems. what is to do in the regestry to prevent the lookup ?

Well, I would assume that the if the proxy settings are changing here that the lookup is active and is what is causing the issue.

If this is one laptop only have tried recreating the profile?

I found the problem. Wrong old entry at Exchange Outlook-Anywhere.
(Exchange Management Console (EMC) > Server Configuration > Client Access > [servername] > Properties > Outlook Anywhere)

I thougt it would be correct there. Don´t know why the rest didn´t make problems...

Only for knowing it, where can i prevent Outlook from lookup the entries from exchange ?

I thought you might ask and so I have been trialling my knowledge database.....Google.....to find out how.

I can't seem to find the Technet article but I found the below, second post in

https://forum.ovh.us/showthread.php/1525-Exchange-2013-Microsoft-Exchange-Proxy-Settings-keep-changing

Thanks for helping