<s>
Microsoft	B-Application
Message	I-Application
Queuing	I-Application
(	O
MSMQ	B-Application
)	O
is	O
a	O
message	B-Operating_System
queue	I-Operating_System
implementation	O
developed	O
by	O
Microsoft	O
and	O
deployed	O
in	O
its	O
Windows	B-Application
Server	O
operating	O
systems	O
since	O
Windows	B-Device
NT	I-Device
4	I-Device
and	O
Windows	B-Application
95	I-Application
.	O
</s>
<s>
Windows	B-Device
Server	I-Device
2016	I-Device
and	O
Windows	B-Operating_System
10	I-Operating_System
also	O
includes	O
this	O
component	O
.	O
</s>
<s>
In	O
addition	O
to	O
its	O
mainstream	O
server	O
platform	O
support	O
,	O
MSMQ	B-Application
has	O
been	O
incorporated	O
into	O
Microsoft	O
Embedded	O
platforms	O
since	O
1999	O
and	O
the	O
release	O
of	O
Windows	B-Operating_System
CE	I-Operating_System
3.0	O
.	O
</s>
<s>
MSMQ	B-Application
is	O
a	O
messaging	O
protocol	O
that	O
allows	O
applications	O
running	O
on	O
separate	O
servers/processes	O
to	O
communicate	O
in	O
a	O
failsafe	O
manner	O
.	O
</s>
<s>
This	O
enables	O
communication	O
across	O
networks	O
and	O
between	O
computers	O
,	O
running	O
Windows	B-Application
,	O
which	O
may	O
not	O
always	O
be	O
connected	O
.	O
</s>
<s>
By	O
contrast	O
,	O
sockets	B-Protocol
and	O
other	O
network	O
protocols	O
assume	O
that	O
direct	O
connections	O
always	O
exist	O
.	O
</s>
<s>
MSMQ	B-Application
has	O
been	O
available	O
to	O
developers	O
on	O
Microsoft	O
platforms	O
since	O
1997	O
,	O
and	O
has	O
commonly	O
been	O
used	O
in	O
enterprise	O
software	O
built	O
with	O
Visual	B-Application
Studio	I-Application
,	O
both	O
in	O
the	O
native	O
pre-.NET	O
incarnation	O
(	O
version	O
5	O
and	O
6	O
)	O
,	O
and	O
in	O
Visual	B-Application
Studio	I-Application
.NET	O
.	O
</s>
<s>
Microsoft	O
also	O
has	O
incorporated	O
MSMQ	B-Application
in	O
its	O
messaging	O
technology	O
framework	O
,	O
Windows	B-Application
Communication	I-Application
Foundation	I-Application
(	O
WCF	O
)	O
.	O
</s>
<s>
Under	O
WCF	O
,	O
MSMQ	B-Application
can	O
be	O
used	O
for	O
providing	O
secure	O
,	O
reliable	O
transport	O
with	O
a	O
unified	O
programming	O
model	O
compatible	O
with	O
other	O
communications	O
standards	O
.	O
</s>
<s>
MSMQ	B-Application
is	O
responsible	O
for	O
reliably	O
delivering	O
messages	O
between	O
applications	O
inside	O
and	O
outside	O
the	O
enterprise	O
.	O
</s>
<s>
MSMQ	B-Application
ensures	O
reliable	O
delivery	O
by	O
placing	O
messages	O
that	O
fail	O
to	O
reach	O
their	O
intended	O
destination	O
in	O
a	O
queue	O
and	O
then	O
resending	O
them	O
once	O
the	O
destination	O
is	O
reachable	O
.	O
</s>
<s>
Dead	B-Operating_System
letter	I-Operating_System
queues	I-Operating_System
can	O
be	O
created	O
for	O
looking	O
at	O
messages	O
which	O
timed	O
out	O
or	O
failed	O
for	O
other	O
reasons	O
.	O
</s>
<s>
MSMQ	B-Application
supports	O
both	O
durable	O
and	O
non-durable	O
messaging	O
to	O
make	O
a	O
trade	O
off	O
between	O
performance	O
or	O
consistency	O
by	O
writing	O
messages	O
to	O
disk	O
or	O
only	O
in	O
RAM	O
.	O
</s>
<s>
MSMQ	B-Application
also	O
supports	O
transactions	O
.	O
</s>
<s>
Microsoft	O
Distributed	O
Transaction	O
Coordinator	O
(	O
MSDTC	O
)	O
supports	O
transactional	O
access	O
to	O
MSMQ	B-Application
and	O
other	O
resources	O
to	O
achieve	O
transactional	O
exact	O
once	O
processing	O
.	O
</s>
<s>
The	O
following	O
ports	O
are	O
used	O
for	O
Microsoft	B-Application
Message	I-Application
Queuing	I-Application
operations	O
:	O
</s>
<s>
*	O
These	O
port	O
numbers	O
may	O
be	O
incremented	O
by	O
11	O
if	O
the	O
initial	O
choice	O
of	O
RPC	O
port	O
is	O
being	O
used	O
when	O
Message	B-Operating_System
Queuing	I-Operating_System
initializes	O
.	O
</s>
<s>
Supports	O
Windows	B-Application
95	I-Application
,	O
Windows	B-Device
NT	I-Device
4.0	I-Device
SP3	O
,	O
Windows	B-Device
98	I-Device
and	O
Windows	B-Device
Me	I-Device
.	O
</s>
<s>
Version	O
2.0	O
,	O
included	O
with	O
Windows	B-Application
2000	I-Application
.	O
</s>
<s>
New	O
features	O
include	O
:	O
Support	O
for	O
registering	O
public	O
message	B-Operating_System
queues	I-Operating_System
in	O
Active	B-Protocol
Directory	I-Protocol
,	O
128-bit	O
encryption	O
and	O
digital	O
certificate	O
support	O
,	O
full	O
COM	B-Application
support	O
for	O
message	O
properties	O
(	O
achieving	O
functional	O
parity	O
with	O
the	O
Win32	B-Library
API	I-Library
function	O
calls	O
,	O
full	O
DNS	O
path	O
name	O
support	O
,	O
improved	O
performance	O
in	O
multi-threaded	O
applications	O
.	O
</s>
<s>
Version	O
3.0	O
,	O
included	O
with	O
Windows	B-Application
XP	I-Application
(	O
Professional	O
,	O
not	O
Home	O
Edition	O
)	O
and	O
Windows	B-Application
Server	I-Application
2003	I-Application
.	O
</s>
<s>
New	O
features	O
include	O
:	O
Internet	O
Messaging	O
(	O
referencing	O
queues	O
via	O
HTTP	O
,	O
SOAP-formatted	O
messages	O
,	O
MSMQ	B-Application
support	O
for	O
Internet	B-Application
Information	I-Application
Services	I-Application
)	O
,	O
queue	O
aliases	O
,	O
multicasting	O
of	O
messages	O
,	O
and	O
additional	O
support	O
for	O
programmatic	O
maintenance	O
and	O
administration	O
of	O
queues	O
and	O
MSMQ	B-Application
itself	O
.	O
</s>
<s>
Version	O
4.0	O
,	O
part	O
of	O
Windows	B-Application
Vista	I-Application
and	O
Windows	B-Device
Server	I-Device
2008	I-Device
.	O
</s>
<s>
Version	O
5.0	O
,	O
part	O
of	O
Windows	B-Device
7	I-Device
and	O
Windows	B-Device
Server	I-Device
2008	I-Device
R2	I-Device
.	O
</s>
<s>
New	O
features	O
include	O
:	O
support	O
for	O
Secure	O
Hash	O
Algorithm	O
2.0	O
(	O
SHA2	B-Algorithm
)	O
and	O
all	O
advanced	O
hash	O
algorithms	O
that	O
are	O
supported	O
in	O
Windows	B-Device
2008	I-Device
R2	I-Device
;	O
by	O
default	O
,	O
weaker	O
hash	O
algorithms	O
are	O
disabled	O
.	O
</s>
<s>
Version	O
6.0	O
,	O
part	O
of	O
Windows	B-Application
8	I-Application
and	O
Windows	B-Device
Server	I-Device
2012	I-Device
.	O
</s>
<s>
Version	O
6.3	O
,	O
part	O
of	O
Windows	B-Device
8.1	I-Device
and	O
Windows	B-Device
Server	I-Device
2012	I-Device
R2	O
.	O
</s>
<s>
MSMQ	B-Application
is	O
heavily	O
used	O
in	O
various	O
Windows	B-Application
Platform-based	O
contact	O
center	O
applications	O
which	O
uses	O
this	O
service	O
for	O
internal	O
notifications	O
and	O
services	O
.	O
</s>
