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Title
Autodiscover error when connecting to mailboxes in Office 365: "COMAutodiscoverEWS.Discover2: [80004005] Unspecified error" -
Description
When Exchange Store Manager attempts to connect to mailboxes that are in Office 365 it is unable to scan them and in the ESM MailboxID-xx-yyyymmdd.wlog you see the following:00:21:21 DEBUG: Creating AutodiscoverEWS instance by calling: Quest.ArchiveManager.AutodiscoverEWS
00:21:22 ERROR: COMAutodiscoverEWS.Discover2:00:21:22 [80004005] Unspecified error00:21:22 Source: Quest.AM.Autodiscover00:21:22 Description: System.AggregateException: One or more errors occurred.00:21:22 Inner exception:00:21:22 System.AggregateException: One or more errors occurred.00:21:22 Inner exception:00:21:22 System.NullReferenceException: Object reference not set to an instance of an object.00:21:22 Source: Quest.AM.Autodiscover
In the ESM log you may also see:
10/3/2018 5:59:51 AM Failed 545 COMAutodiscoverEWS.Discover2: [80004005] Unspecified error Source: Quest.AM.Autodiscover Description: System.AggregateException: One or more errors occurred. Inner exception: System.AggregateException: One or more errors occurred. -
Cause
Exchange Store Manager unable to connect via Autodiscover
ORTypically this error is seen when using proxy credentials to connect to Office 365. The proxy credentials account password has expired. -
Resolution
RESOLUTION 1:
1. Open the Registry (regedit) on the Archive Manager machine
2. Navigate to:
HKEY_CURRENT_USER\SOFTWARE\Quest\Quest Archive Manager\Autodiscover Url\
3. Right-click Autodiscover Url | New | String
4. Name the new string the Office 365 MailServerName
5. Value: https://autodiscover-s.outlook.com/autodiscover/autodiscover.xml
Note: The MailServerName will be the value in the MailboxID log for "MailServer". It is also found in the "Mail Servers" Node in the Archive Manager Website under Administration and will be the name of your Office 365 mailserver.
6. Restart the Exchange Store Manager Service
RESOLUTION 2:
1. Stop the Exchange Store Manager service.2. Reset the proxy credential account password3. Update the proxy credential account password in the Archive Manager Administration portal4. Restart the Exchange Store Manager serviceNote: You may want to set the proxy credential account password to never expire to avoid this error going forward -
Additional Information
2. Windows Registry Disclaimer: Support does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.