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PidTagRpcOverHttpFlags Canonical Property

Applies to: Outlook 2013 | Outlook 2016

Contains the settings in a profile used by Microsoft Office Outlook to connect to Microsoft Exchange Server by using a remote procedure call (RPC) over Hypertext Transfer Protocol (HTTP).

Property Value
Associated properties:
PR_ROH_FLAGS
Identifier:
0x6623
Data type:
PT_LONG
Area:
Miscellaneous

Remarks

The PR_ROH_FLAGS property is stored in the Global Profile Section of a Messaging Application Programming Interface (MAPI) profile. The value of PR_ROH_FLAGS is a bitmask that is made up of one or more of the following flags.

Name Value Description
ROHFLAGS_USE_ROH
0x1
Connect to the Exchange Server using RPC over HTTP.
ROHFLAGS_SSL_ONLY
0x2
Connect to the Exchange Server using Secure Socket Layer (SSL) only.
ROHFLAGS_MUTUAL_AUTH
0x4
Mutually authenticate the session when connecting by using SSL.
ROHFLAGS_HTTP_FIRST_ON_FAST
0x8
On fast networks, connect by using HTTP first. Then, connect by using TCP/IP.
ROHFLAGS_HTTP_FIRST_ON_SLOW
0x20
On slow networks, connect by using HTTP first. Then, connect by using TCP/IP.

For example, to set the PR_ROH_FLAGS property to turn on RPC over HTTP, to require SSL, and to specify that the HTTP protocol should be used first on slow connections, set the value of the PR_ROH_FLAGS property to ROHFLAGS_USE_ROH | ROHFLAGS_SSL_ONLY | ROHFLAGS_HTTP_FIRST_ON_SLOW which is equal to 0x23.

Protocol specifications

[MS-OXPROPS]

Provides references to related Exchange Server protocol specifications.

[MS-OXCFXICS]

Defines the basic data structures that are used in remote operations.

[MS-OXOMSG]

Specifies the properties and operations that are permissible for email message objects.

Header files

Mapidefs.h

Provides data type definitions.

Mapitags.h

Contains definitions of properties listed as alternate names.

See also

MAPI Properties

MAPI Canonical Properties

Mapping Canonical Property Names to MAPI Names

Mapping MAPI Names to Canonical Property Names