<s>
Background	B-Protocol
Intelligent	I-Protocol
Transfer	I-Protocol
Service	I-Protocol
(	O
BITS	O
)	O
is	O
a	O
component	O
of	O
Microsoft	B-Application
Windows	I-Application
XP	I-Application
and	O
later	O
iterations	O
of	O
the	O
operating	O
systems	O
,	O
which	O
facilitates	O
asynchronous	O
,	O
prioritized	O
,	O
and	O
throttled	O
transfer	O
of	O
files	O
between	O
machines	O
using	O
idle	O
network	O
bandwidth	O
.	O
</s>
<s>
It	O
is	O
most	O
commonly	O
used	O
by	O
recent	O
versions	O
of	O
Windows	O
Update	O
,	O
Microsoft	O
Update	O
,	O
Windows	O
Server	O
Update	O
Services	O
,	O
and	O
System	B-Protocol
Center	I-Protocol
Configuration	I-Protocol
Manager	I-Protocol
to	O
deliver	O
software	O
updates	O
to	O
clients	O
,	O
Microsoft	O
's	O
anti-virus	O
scanner	O
Microsoft	B-Application
Security	I-Application
Essentials	I-Application
(	O
a	O
later	O
version	O
of	O
Windows	B-Application
Defender	I-Application
)	O
to	O
fetch	O
signature	O
updates	O
,	O
and	O
is	O
also	O
used	O
by	O
Microsoft	O
's	O
instant	O
messaging	O
products	O
to	O
transfer	O
files	O
.	O
</s>
<s>
BITS	O
is	O
exposed	O
through	O
the	O
Component	B-Application
Object	I-Application
Model	I-Application
(	O
COM	O
)	O
.	O
</s>
<s>
Uploads	O
require	O
the	O
IIS	B-Application
web	I-Application
server	I-Application
,	O
with	O
BITS	O
server	O
extension	O
,	O
on	O
the	O
receiving	O
side	O
.	O
</s>
<s>
BITS	O
supports	O
transfers	O
over	O
SMB	B-Operating_System
,	O
HTTP	B-Protocol
and	O
HTTPS	B-Protocol
.	I-Protocol
</s>
<s>
BITS	O
constantly	O
monitors	O
network	O
traffic	O
for	O
any	O
increase	O
or	O
decrease	O
in	O
network	O
traffic	O
and	O
throttles	O
its	O
own	O
transfers	O
to	O
ensure	O
that	O
other	O
foreground	O
applications	O
(	O
such	O
as	O
a	O
web	B-Application
browser	I-Application
)	O
get	O
the	O
bandwidth	O
they	O
need	O
.	O
</s>
<s>
BITS	O
versions	O
3.0	O
and	O
up	O
will	O
use	O
Internet	B-Protocol
Gateway	I-Protocol
Device	I-Protocol
counters	O
,	O
if	O
available	O
,	O
to	O
more	O
accurately	O
calculate	O
available	O
bandwidth	O
.	O
</s>
<s>
Otherwise	O
,	O
BITS	O
will	O
use	O
the	O
speed	O
as	O
reported	O
by	O
the	O
NIC	B-Protocol
to	O
calculate	O
bandwidth	O
.	O
</s>
<s>
This	O
can	O
lead	O
to	O
bandwidth	O
calculation	O
errors	O
,	O
for	O
example	O
when	O
a	O
fast	O
network	B-Protocol
adapter	I-Protocol
(	O
10	O
Mbit/s	O
)	O
is	O
connected	O
to	O
the	O
network	O
via	O
a	O
slow	O
link	O
(	O
56	O
kbit/s	O
)	O
.	O
</s>
<s>
Files	O
must	O
be	O
added	O
,	O
specifying	O
both	O
the	O
source	O
and	O
destination	O
URIs	B-Protocol
.	O
</s>
<s>
BITS	O
provides	O
API	B-Application
access	O
to	O
control	O
jobs	O
.	O
</s>
<s>
BITS	O
uses	O
round-robin	B-Algorithm
scheduling	I-Algorithm
to	O
process	O
jobs	O
in	O
the	O
same	O
priority	O
and	O
to	O
prevent	O
a	O
large	O
transfer	O
job	O
from	O
blocking	O
smaller	O
jobs	O
.	O
</s>
<s>
Microsoft	O
provides	O
a	O
BITS	O
Administration	O
Utility	O
(	O
BITSAdmin	O
)	O
command-line	B-Application
utility	O
to	O
manage	O
BITS	O
jobs	O
.	O
</s>
<s>
The	O
utility	O
is	O
part	O
of	O
Windows	B-Application
Vista	I-Application
and	O
later	O
.	O
</s>
<s>
It	O
is	O
also	O
available	O
as	O
a	O
part	O
of	O
the	O
Windows	B-Application
XP	I-Application
Service	O
Pack	B-Application
2	O
Support	O
Tools	O
or	O
Windows	O
Server	O
2003	O
Service	O
Pack	B-Application
1	O
Support	O
Tools	O
.	O
</s>
<s>
In	O
Windows	B-Device
7	I-Device
,	O
the	O
BITSAdmin	O
utility	O
is	O
deprecated	O
in	O
favor	O
of	O
Windows	B-Application
PowerShell	I-Application
cmdlets	O
.	O
</s>
<s>
The	O
BitsTransfer	O
PowerShell	B-Application
module	O
provides	O
eight	O
cmdlets	O
with	O
which	O
to	O
manage	O
BITS	O
jobs	O
.	O
</s>
<s>
BITS	O
Download	B-Protocol
Manager	I-Protocol
–	O
A	O
download	B-Protocol
manager	I-Protocol
for	O
Windows	O
that	O
creates	O
BITS	O
Jobs	O
.	O
</s>
<s>
BITSync	O
–	O
An	O
open	B-Application
source	I-Application
utility	O
that	O
uses	O
BITS	O
to	O
perform	O
file	B-Application
synchronization	I-Application
on	O
Server	B-Operating_System
Message	I-Operating_System
Block	I-Operating_System
network	O
shares	O
.	O
</s>
<s>
Civilization	B-Application
V	I-Application
–	O
Uses	O
BITS	O
to	O
download	O
mod	O
packages	O
.	O
</s>
<s>
Eve	B-Protocol
Online	I-Protocol
–	O
Uses	O
BITS	O
to	O
download	O
all	O
the	O
patches	O
post-Apocrypha	O
(	O
March	O
10	O
,	O
2009	O
)	O
.	O
</s>
<s>
Some	O
Google	B-Application
services	O
including	O
Chrome	B-Application
,	O
Gears	B-Application
,	O
Pack	B-Application
,	O
Flutter	B-Application
updater	O
and	O
YouTube	B-General_Concept
Uploader	I-General_Concept
used	O
BITS	O
.	O
</s>
<s>
Firefox	B-Application
(	O
since	O
version	O
68	O
)	O
for	O
updates	O
.	O
</s>
<s>
KBOX	O
Systems	B-Application
Management	I-Application
Appliance	O
–	O
A	O
systems	B-Application
management	I-Application
appliance	O
that	O
can	O
use	O
BITS	O
to	O
deliver	O
files	O
to	O
Windows	O
systems	O
.	O
</s>
<s>
RSS	B-Application
Bandit	I-Application
–	O
Uses	O
BITS	O
to	O
download	O
attachments	O
in	O
web	O
feeds	O
.	O
</s>
<s>
SharpBITS	O
–	O
An	O
open	B-Application
source	I-Application
download	B-Protocol
manager	I-Protocol
for	O
Windows	O
that	O
handles	O
BITS	O
jobs	O
.	O
</s>
<s>
WinBITS	O
–	O
An	O
open	B-Application
source	I-Application
Downloader	O
for	O
Windows	O
that	O
downloads	O
files	O
by	O
creating	O
BITS	O
Jobs	O
.	O
</s>
<s>
Novell	B-Protocol
ZENworks	I-Protocol
Desktop	I-Protocol
Management	I-Protocol
–	O
A	O
systems	B-Application
management	I-Application
software	O
that	O
can	O
use	O
BITS	O
to	O
deliver	O
application	O
files	O
to	O
workstations	O
.	O
</s>
<s>
Specops	O
Deploy/App	O
–	O
A	O
systems	B-Application
management	I-Application
software	O
that	O
(	O
when	O
available	O
)	O
uses	O
BITS	O
for	O
delivering	O
packages	O
to	O
the	O
clients	O
in	O
the	O
background	O
.	O
</s>
