Unable to perform EV operations when outlook 2016 connects to Exchange 2010 via RPC over HTTP/S profile

Unable to perform EV operations when outlook 2016 connects to Exchange 2010 via RPC over HTTP/S profile

Article: 100032346
Last Published: 2016-04-25
Ratings: 1 0
Product(s): Enterprise Vault


Outlook 2016 users can no longer use several Enterprise Vault functions when mailboxes reside on Exchange 2010, and Outlook is using RPC over http/https from an external network.

This functions include:
  • Archive
  • Restore
  • Retrieve
  • Search


Error Message

The following lines are captured in the workstation's Enterprise Vault client trace log:

[L]: DesktopCommon::UseRPCOverHTTP: Read PR_ROH_FLAGS: 0x0
[M]: Could not find PR_ROH_FLAGS
[H]: RPC over HTTP is not enabled (flags = 0)

[L]: ~DesktopCommon::UseRPCOverHTTP: Read PR_ROH_FLAGS: 0x40380

[H]:     Enterprise Vault Client XX.X.X.XXX (Light/Full functionality enabled)
[H]:     Microsoft Windows XX, XX Edition (build XXXXX 10240),
[H]:     Microsoft Outlook 2016, 64-bit (16.0.0.XXXX)
[H]:     [RPC over HTTP not enabled]

Note: For information on how to perform an Enterprise Vault client trace review article  000094823.


This issue occurs due to the changes in the Outlook 2016 architecture that does not create the MAPI attribute "ROHFLAGS_USE_ROH"  when Outlook 2016 connects to Exchange 2010 mailboxes. This change causes the Enterprise Vault client add-ins do not detect RPC over http,. which does not fail back on the 'RPC over http proxy URL' specified in the desktop policy.


1. Install Outlook Spy > Open Outlook & select 'RPC-http' profile.
3. Click on the IMapiSession button on the Outlook Spy toolbar.
4. Click on OpenProfileSection.
5. Scroll down and select pbGlobalProfileSectionGuid.
6. Add property, Tag = PR_ROH_FLAGS,Value = 7, click OK. Restart outlook.


This issue has been addressed in the following release:

Enterprise Vault 12.1

The following link contains information about Enterprise Vault 12.1

Note: For information on how to obtain Enterprise Vault 12 see: How to obtain the license key and installation download for Veritas products


Etrack : 3874850

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