Hello! Please help with ActiveSync connection - I can't set up my Outlook 2019 to use Exchange ActiveSync. And most strange thing is: Office for Mac (Outlook) is working perfectly but MS Outlook show me a window (screenshot is in attachment). I tried to test EAS using MS Remote Connectivity Analyzer and it didn't find any problems: ------------ The Microsoft Connectivity Analyzer is testing Exchange ActiveSync. Exchange ActiveSync was tested successfully. Additional Details Elapsed Time: 9975 ms. Test Steps Attempting to resolve the host name mail.ztsm.ru in DNS. The host name resolved successfully. Additional Details IP addresses returned: 80.79.71.5 Elapsed Time: 199 ms. Testing TCP port 443 on host mail.ztsm.ru to ensure it's listening and open. The port was opened successfully. Additional Details Elapsed Time: 149 ms. Testing the SSL certificate to make sure it's valid. The certificate passed all validation requirements. Additional Details Elapsed Time: 3184 ms. Test Steps The Microsoft Connectivity Analyzer is probing the TCP endpoint 80.79.71.5 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. Additional Details TLS Protocol: SSL v3, Enabled cipher suites: TLS_RSA_WITH_3DES_EDE_CBC_SHA, TLS_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_RC4_128_MD5 TLS Protocol: TLS 1.0, Enabled cipher suites: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_3DES_EDE_CBC_SHA, TLS_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_RC4_128_MD5 TLS Protocol: TLS 1.1, Not enabled. TLS Protocol: TLS 1.2, Enabled cipher suites: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_256_GCM_SHA384, TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA256, TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_RC4_128_MD5 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. Additional Details Enabled cipher suites: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA256 The Microsoft Connectivity Analyzer is attempting to obtain the SSL certificate from remote server mail.ztsm.ru on port 443. The Microsoft Connectivity Analyzer successfully obtained the remote SSL certificate. Additional Details Remote Certificate Subject: CN=mail.ztsm.ru, O=AO VO Zarubezhtsvetmet, L=Moscow, C=RU, Issuer: CN=Thawte RSA CA 2018, OU=www.digicert.com, O=DigiCert Inc, C=US. Validating the certificate name. The certificate name was validated successfully. Additional Details Host name mail.ztsm.ru was found in the Certificate Subject Common name. Certificate trust is being validated. The certificate is trusted and all certificates are present in the chain. Test Steps The Microsoft Connectivity Analyzer is attempting to build certificate chains for certificate CN=mail.ztsm.ru, O=AO VO Zarubezhtsvetmet, L=Moscow, C=RU. One or more certificate chains were constructed successfully. Additional Details A total of 1 chains were built. The highest quality chain ends in root certificate CN=DigiCert Global Root CA, OU=www.digicert.com, O=DigiCert Inc, C=US. Analyzing the certificate chains for compatibility problems with versions of Windows. No Windows compatibility problems were identified. Additional Details The certificate chain has been validated up to a trusted root. Root = CN=DigiCert Global Root CA, OU=www.digicert.com, O=DigiCert Inc, C=US. Testing the certificate date to confirm the certificate is valid. Date validation passed. The certificate hasn't expired. Additional Details The certificate is valid. NotBefore = 3/30/2020 12:00:00 AM, NotAfter = 4/7/2021 12:00:00 PM Testing HTTP Authentication Methods for URL https://mail.ztsm.ru/Microsoft-Server-ActiveSync/. The HTTP authentication methods are correct. Additional Details The Microsoft Connectivity Analyzer found all expected authentication methods and no disallowed methods. Methods found: Basic HTTP Response Headers: Content-Length: 1293 Content-Type: text/html Date: Wed, 21 Oct 2020 07:04:07 GMT Server: Microsoft-IIS/7.5 WWW-Authenticate: Basic realm="mail.ztsm.ru" X-Powered-By: ASP.NET Elapsed Time: 186 ms. An ActiveSync session is being attempted with the server. Testing of an Exchange ActiveSync session completed successfully. Additional Details Elapsed Time: 6255 ms. Test Steps Attempting to send the OPTIONS command to the server. The OPTIONS response was successfully received and is valid. Additional Details HTTP Response Headers: Allow: OPTIONS Allow: POST MS-Server-ActiveSync: 14.3 MS-ASProtocolVersions: 2.0,2.1,2.5,12.0,12.1,14.0,14.1 MS-ASProtocolCommands: Sync,SendMail,SmartForward,SmartReply,GetAttachment,GetHierarchy,CreateCollection,DeleteCollection,MoveCollection,FolderSync,FolderCreate,FolderDelete,FolderUpdate,MoveItems,GetItemEstimate,MeetingResponse,Search,Settings,Ping,ItemOperations,Provision,ResolveRecipients,ValidateCert Public: OPTIONS,POST Content-Length: 0 Cache-Control: private Date: Wed, 21 Oct 2020 07:04:07 GMT Server: Microsoft-IIS/7.5 X-AspNet-Version: 2.0.50727 X-Powered-By: ASP.NET Elapsed Time: 131 ms. Attempting the FolderSync command on the Exchange ActiveSync session. The FolderSync command completed successfully. Additional Details Number of folders: 22 Response: <FolderSync xmlns="FolderHierarchy:"> <Status>1</Status> <SyncKey>1</SyncKey> <Changes> <Count>22</Count> <Add> <ServerId>1</ServerId> <ParentId>0</ParentId> <DisplayName>Archive</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>2</ServerId> <ParentId>0</ParentId> <DisplayName>Deleted Items</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>3</ServerId> <ParentId>0</ParentId> <DisplayName>Drafts</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>4</ServerId> <ParentId>0</ParentId> <DisplayName>Junk Email</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>5</ServerId> <ParentId>0</ParentId> <DisplayName>RSS-каналы</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>6</ServerId> <ParentId>0</ParentId> <DisplayName>Sent Items</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>7</ServerId> <ParentId>0</ParentId> <DisplayName>Входящие</DisplayName> <Type>2</Type> </Add> <Add> <ServerId>8</ServerId> <ParentId>0</ParentId> <DisplayName>Дневник</DisplayName> <Type>11</Type> </Add> <Add> <ServerId>9</ServerId> <ParentId>0</ParentId> <DisplayName>Задачи</DisplayName> <Type>7</Type> </Add> <Add> <ServerId>10</ServerId> <ParentId>0</ParentId> <DisplayName>Заметки</DisplayName> <Type>10</Type> </Add> <Add> <ServerId>11</ServerId> <ParentId>0</ParentId> <DisplayName>Исходящие</DisplayName> <Type>6</Type> </Add> <Add> <ServerId>12</ServerId> <ParentId>0</ParentId> <DisplayName>Календарь</DisplayName> <Type>8</Type> </Add> <Add> <ServerId>13</ServerId> <ParentId>0</ParentId> <DisplayName>Контакты</DisplayName> <Type>9</Type> </Add> <Add> <ServerId>14</ServerId> <ParentId>0</ParentId> <DisplayName>Нежелательная почта</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>15</ServerId> <ParentId>0</ParentId> <DisplayName>Отправленные</DisplayName> <Type>5</Type> </Add> <Add> <ServerId>16</ServerId> <ParentId>0</ParentId> <DisplayName>Ошибки синхронизации</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>17</ServerId> <ParentId>16</ParentId> <DisplayName>Конфликты</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>18</ServerId> <ParentId>16</ParentId> <DisplayName>Локальные ошибки</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>19</ServerId> <ParentId>16</ParentId> <DisplayName>Ошибки сервера</DisplayName> <Type>12</Type> </Add> <Add> <ServerId>20</ServerId> <ParentId>0</ParentId> <DisplayName>Предлагаемые контакты</DisplayName> <Type>14</Type> </Add> <Add> <ServerId>21</ServerId> <ParentId>0</ParentId> <DisplayName>Удаленные</DisplayName> <Type>4</Type> </Add> <Add> <ServerId>22</ServerId> <ParentId>0</ParentId> <DisplayName>Черновики</DisplayName> <Type>3</Type> </Add> </Changes> </FolderSync> HTTP Response Headers: MS-Server-ActiveSync: 14.3 X-MS-RP: 2.0,2.1,2.5,12.0,12.1,14.0,14.1 MS-ASProtocolVersions: 2.0,2.1,2.5,12.0,12.1,14.0,14.1 MS-ASProtocolCommands: Sync,SendMail,SmartForward,SmartReply,GetAttachment,GetHierarchy,CreateCollection,DeleteCollection,MoveCollection,FolderSync,FolderCreate,FolderDelete,FolderUpdate,MoveItems,GetItemEstimate,MeetingResponse,Search,Settings,Ping,ItemOperations,Provision,ResolveRecipients,ValidateCert Content-Length: 941 Cache-Control: private Content-Type: application/vnd.ms-sync.wbxml Date: Wed, 21 Oct 2020 07:04:07 GMT Server: Microsoft-IIS/7.5 Elapsed Time: 865 ms. Attempting the initial sync to the Inbox folder. This initial sync won't return any data. The Sync command completed successfully. Additional Details Status: 1 HTTP Response Headers: MS-Server-ActiveSync: 14.3 Content-Length: 34 Cache-Control: private Content-Type: application/vnd.ms-sync.wbxml Date: Wed, 21 Oct 2020 07:04:08 GMT Server: Microsoft-IIS/7.5 Elapsed Time: 583 ms. Attempting to test the GetItemEstimate command for the Inbox folder. The Microsoft Connectivity Analyzer successfully received the GetItemEstimate response from the server. Additional Details Estimate: 29253 messages HTTP Response Headers: MS-Server-ActiveSync: 14.3 Content-Length: 40 Cache-Control: private Content-Type: application/vnd.ms-sync.wbxml Date: Wed, 21 Oct 2020 07:04:14 GMT Server: Microsoft-IIS/7.5 Elapsed Time: 4674 ms. ---------------- So why is MS Outlook can't use ActiveSync?? P.S. I found temporary decision in this situation - IMAP. But faced with trouble again - here is "Inbox" and "Sent Items" folders and also cyrillic-named folder "Отправленные" so all the messages I sent will copy to Sent Items (locally) but not to "Отправленные" (to mail server). And I see no method to change folder for Sent Items. ![33961-eas.jpg][1] [1]: /api/attachments/33961-eas.jpg?platform=QnA
