I know SM V15 is out of support, but suddenly Outlook for Android no longer can connect to my SM V15 / EAS account. Throws an error about invalid login name / password. Seems to have happened in the last few days.
Interestingly enough, Nine email for Android (from 9folders.com) continues to work just fine with the same EAS account. And I'm pretty sure that Outlook for Android has changed, not the other way around.
The Microsoft Remote Connectivity Analyzer for Exchange ActiveSync reports this:
(And of course, "Tell me more about this issue and how to resolve it" is not particularly helpful.)
Welcoming any comments / ideas here. Not a huge problem, but would like some insight. BTW have NEVER been able to get Outlook for IOS working with SM+EAS. We've used IMAP or another IOS client instead.
The Microsoft Connectivity Analyzer is testing Exchange ActiveSync.The Exchange ActiveSync test failed.
Attempting to resolve the host name email.[domain].com in DNS.The host name resolved successfully.
Testing TCP port 443 on host email.[domain].com to ensure it's listening and open.The port was opened successfully.
Testing the SSL certificate to make sure it's valid.The certificate passed all validation requirements.
The Microsoft Connectivity Analyzer is probing the TCP endpoint 18.104.22.168 on port 443 to detect which SSL/TLS protocols and cipher suites are enabled.We were able to detect the enabled protocols and cipher suites. Checking that your server supports TLS protocols and cipher suites that are compatible with Office 365.Your server supports TLS protocols and cipher suites compatible with Office 365. The Microsoft Connectivity Analyzer is attempting to obtain the SSL certificate from remote server email.[domain].com on port 443.The Microsoft Connectivity Analyzer successfully obtained the remote SSL certificate. Validating the certificate name.The certificate name was validated successfully. Certificate trust is being validated.The certificate is trusted and all certificates are present in the chain.
The Microsoft Connectivity Analyzer is attempting to build certificate chains for certificate CN=email.[domain], OU=PositiveSSL, OU=Domain Control Validated.One or more certificate chains were constructed successfully. Analyzing the certificate chains for compatibility problems with versions of Windows.The test passed with some warnings encountered. Please expand the additional details.
The Microsoft Connectivity Analyzer can only validate the certificate chain using the Root Certificate Update functionality from Windows Update. Your certificate may not be trusted on Windows if the "Update Root Certificates" feature isn't enabled.
Testing the certificate date to confirm the certificate is valid.Date validation passed. The certificate hasn't expired.
The certificate is valid. NotBefore = 11/9/2019 12:00:00 AM, NotAfter = 11/19/2021 11:59:59 PM
Testing HTTP Authentication Methods for URL https://email.[domain].com/Microsoft-Server-ActiveSync/.The HTTP authentication test failed.
A 401 error was received from the server, but no authentication methods are supported. HTTP Response Headers: X-UA-Compatible: IE=edge Content-Length: 1293 Cache-Control: private Content-Type: text/html Date: Fri, 04 Sep 2020 04:08:07 GMT Server: Microsoft-IIS/8.5 X-AspNet-Version: 4.0.30319 X-Powered-By: ASP.NET