I have a Nokia Lumia 900 phone and I have the most recent updates. I cannot connect to my exchange mail server because I get an error that there is a problem with the certificate mail.xxxxx.com. Contact a support person or your service provider. Error code:8072F0D.This is very frustrating that I cannot connect to my business exchange server, but, I could connect via my Samsung and Apple iPhone. Keep in mind that I have a Microsoft phone trying to connect to Microsoft Exchange server!!

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This should not be so hard!Whatever Samsung and iPhone have that allows one to connect, Microsoft phones should have. This does not make sense!!

Hello rdw1260,Thanks for visiting the Answers forum.To resolve this issue, use one of the following methods, as appropriate for your situation.Note To obtain the information about the certificate that you are using, type the Microsoft Office Outlook Web Access URL for the server into the address bar for Windows Internet Explorer, and then click the lock icon. You may have to export one or moreof the certificates in the “Certification Path” to complete the remaining steps. Additionally, you may be able to obtain these files and more specific instructions from your certificate vendor.Method 1: Use a Group Policy configurationUse a Group Policy configuration to distribute certificates that will be trusted by all member computers of the domain. For more information about how to add a trusted root CA to a Group Policy Object (GPO), visit the following Microsoft website. Method 2: Manually install certificates on Exchange Server1.Use an account that has Domain Administrator credentials to log on to the Exchange Server that is used for Outlook Web Access.

Frequently, this server will be the front-end server.2.Click Start, click Run, type mmc.exe, and then clickOK.3.On the File menu, click Add/Remove Snap-in.4.Click Add.5.Click Certificates, and then click Add.6.Click My user account, and then click Finish.7.Click Add, click Computer account, clickNext, and then click Finish.8.Click Close, and then click OK. The list of certificate categories for the local computer appears in the snap-in window.9.Expand Certificates - Current User, right-click Intermediate Certification Authorities, point toAll Tasks, and then click Import.10.Verify that all certificates in the chain are in the Intermediate Certification Authoritiescontainer. Also verify that no certificates are disabled or expired.11.If a certificate is missing, point to All Tasks, and then clickImport.

The concept of Universal apps lets you share common code targeting the Windows Runtime between a Windows Store app and a Windows Phone 8.1 app. However there are still some areas where there isn’t a 1:1 mapping.

When using self-signed certificates with your Windows Runtime based Windows Phone 8.1 apps there is some complexity involved. Hi Prashant,I have an issue during deployment, that is, the application certificate gets installed by default at 'User Intermediate Certification Authorities” where as after doing some research I found that the application checks the certificate at 'Local Computer Trusted Root Certification Authorities'.We are doing SideLoading, for this app using the DISM command.Could you please advice as to how we can change the default location of the certificate using VS2013 else we will have to deploy the certificate using our CA, the path I do not wish to travel right now.Regards,AJ. @Alex Lipov – The System.Net.ServicePointManager (SPM) class is only available for desktop apps. The System.Net classes on the desktop have their own HTTP Protocol implementation and is different from the 'Silverlight' based classes available for the Phone which are based on WinINet based HTTP Protocol implementation. That's why you can't use the SPM class on the Phone@AJ – I am not quite sure how you can access the 'Local Computer' store from a Windows Store app, can you clarify your scenario/situation further or use the MSDN forums to clarify your question?@Mukesh Pandey – These classes are only available for Windows Phone 8.1, they cannot be used on Windows Phone 8.0.@anil/ @nanu – Can you clarify what you mean by 'it is not working'? What does not work?

Adding the certificate using the code above or something else? I just tried adding a certificate using the code above to a 'Windows Phone Silverlight 8.1' based project and I did not encounter any errors/exceptions. Please, error accessing WP market store.

Pleas analyze this info coming from my phone for me. Test Log // This log file describes test failures from the Production Self Test.

// If you see this log file, it means that this device is not ready to ship // because some of the production self tests are failing. If this is a pre-production // device, this is an expected result and this file can be ignored (or deleted).

If this // is supposed to be a production ready device, check the log below to identify tests that // are failing, and see the Windows Phone documentation for information on how to fix the // issues identified by these tests. I followed these instructions precisely, the certificate appears to be added correctlybut my Windows.System.Launcher.LaunchUriAsync(uri); call doesn't runI don't get any errors adding the certificatebut I can tell you that dispite adding it to the trust storeedge.

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Still says it's invalid. IE says it's valid chrome says: The server did not supply any Certificate Transparency Information, the certificate for this site expires in 2017 or later and the certificate chain contains a certificate signed using SHA-1.Can you tell me what the requirements of a certificate are for Windows Universal? Or any other ideas as to why it isn't working?Thanks,Frank.