How can I decrypt Outlook ActiveSync traffic?

2 posts, 0 answers
  1. Karim
    Karim avatar
    1 posts
    Member since:
    Dec 2014

    Posted 17 Dec 2014 Link to this post

    I'm trying to use fiddler to debug an Exchange ActiveSync error. Unfortunately, starting Outlook with fiddler triggers an error message:
    "There is a problem with the proxy server's security certificate. The name on the security certificate is invalid or does not match the name of the target site outlook.office365.com".

    I suppose this is some rudimentary certificate-pinning from Outlook. How could I solve this? Would editing the name of the certificate in certmgr.msc do the job?

    Thanks in advance
  2. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 18 Dec 2014 Link to this post

    I'm not aware of any form of certificate pinning in Outlook, and I use Outlook through Fiddler regularly.

    Have you configured Windows to trust Fiddler's Root Certificate?

    Regards,
    Eric Lawrence
    Telerik
     

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