Proxy Server Security Certificate Error Code 0
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Outlook Is Unable To Connect To The Proxy Server Error Code 10 Exchange 2013
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Outlook Is Unable To Connect To The Proxy Server Error Code 8 Windows 7
takes a few minutes. Join Now Good morning all, I was just notified by there is a problem with the server's security certificate sap a user this morning (my boss) that she is unable to connect to Outlook on our Terminal Server. She is the outlook is unable to connect to the proxy server error code 0 exchange 2013 only user with this issue. She is using Outlook 2010 and uses this Terminal Server very frequently. The error reads: There is a problem with the proxy servers's security certificate. The name on the https://support.microsoft.com/en-us/kb/923575 security certificate is invalid or does not match the name of the target site [server.domain.com]. Outlook is unable to connect to the proxy server. (Error Code 0). We don't use a proxy server, nor is there any certificate that I'm aware of. Exchange isn't my strong point, so I was hoping you guys could help point me in the right direction! In the meantime, guess I'll call my buddy Google. https://community.spiceworks.com/topic/434416-problem-with-proxy-server-security-certificate-don-t-use-a-proxy-server Thanks Reply Subscribe RELATED TOPICS: Outlook 2010 Proxy Server security certficate Proxy Server? Proxy server   4 Replies Jalapeno OP gfxrelay Jan 25, 2014 at 4:52 UTC Hi, what version of Exchange are you using? 0 Jalapeno OP Helpful Post gfxrelay Jan 25, 2014 at 5:01 UTC Ooh almost forgot about this issue. We had it a while ago. Outlook tries to connect to Exchange over https, but this normally happens if the name on the certificate does not match the name of the exchange server you are trying to connect to. We found that you either have to regenerate the the certificate that exchange uses and include all the required names or you have to change the settings in outlook to only connect over http. The last mentioned option is less secure, but a lot easier to do. 2 Serrano OP CFonseca Jan 27, 2014 at 3:14 UTC Thank you for the suggestion. The issue seems to have corrected itself for the time being and I'm not quite sure what happened, but I will give that a try if it happens again. Thanks again! 0 Pimiento OP Mohammed8790 Oct 19, 2014 at
» Exchange 2013 certificate error: There is a problem with the proxy server's security certificate. Let's take a look at an issue where users http://msexchangeguru.com/2015/10/02/error-code10/ keep getting the following pop up in the outlook client frequently. 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 "server.domain.local" Outlook is unable to connect to the proxy server. (Error Code 10) Possibility 1: => On the user's machine launch proxy server Outlook=> Click File => Go to Account Settings. => Select the email account and then click Change. => Click the More Settings button. => Now click the Exchange Proxy Settings. => Copy the URL for "Only connect to the proxy servers that have this principle name in their certificate" & try to browse it. => You will get a certificate error, the proxy server click on the top red x mark next to the address bar. It will open a certificate. => Check the DNS names listed in the certificate & make a note of them. => Now go the Exchange Server, Launch Exchange Management Shell.' => Run the following command: Get-OutlookAnywhere => Look for the following options: ExternalHostname mail.domain.com InternalHostname mail.domain.local => Compare these two entries with the list of names we collected from the client machines certificate. => You will find that the internal host name is missing in the certificate. => To resolve this issue, we can run the following command to match the Internal Host name to the External host name as in the certificate SAN entry: Set-OutlookAnywhere -Identity "EXCH201301Rpc (Default Web Site)" -InternalHostname mail.domain.com -InternalClientsRequireSsl $true => Next run IIS reset or simply recycle the AutoDiscover AppPool in the IIS Manager. => This change will take effect soon after the user closes & reopens the outlook, however the default autodiscover refresh internal is 1 hour, so it's better to test after an hour or so. Possibility 2: Run