Should I block it?

No, this file is 100% safe to run.

Relationships

Parent process

services.exe (Services and Controller app by Microsoft)

Child processes

Related files

AOLacsd.exe

AOL Connectivity Service by AOL LLC (Signed)

Remove AOLacsd.exe

Version:	4.6.1.2
MD5:	85180cf88c5ebad73b452a43a004ca51
SHA1:	22d85bae85ca4ecd5f6bb5ee84a2dde8af27558d
SHA256:	24d25495dc21293fc1f37ee7e7c2a4725e66d3d25be05d7edf4bb4f444c65526

What is AOLacsd.exe?

AOL Connectivity Service attempts to automatically restore yoru AOL connection should you lose it while online which negates having to go through the standard AOL procedure of signing back on manually.

About AOLacsd.exe (from AOL LLC)

“The AOL software uses ACS to connect to the AOL service.”

Overview

AOLAcsd.exe runs as a service under the name AOL ACS (SYSTEM\CurrentControlSet\Services\AOL ACS) with extensive SYSTEM privileges (full administrator access). It has been configured with a firewall exception which allows both inbound and outbound network communication without being blocked. The file is digitally signed by AOL LLC which was issued by the VeriSign certificate authority (CA).

Details

File name:	AOLAcsd.exe
Publisher:	AOL LLC
Product name:	AOL Connectivity Service
Typical file path:	C:\Program Files\common files\aol\acs\aolacsd.exe
File version:	4.6.1.2
Size:	45.55 KB (46,640 bytes)
Certificate
Issued to:	AOL LLC
Authority (CA):	VeriSign
Effective date:	Sunday, July 23, 2006
Expiration date:	Tuesday, July 24, 2007
Digital DNA
Entropy:	5.347330
File packed:	No
.NET CLR:	No

More details

Behaviors

Services

Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)

AOL ACS
'AOL ACS' (AOL Connectivity Service)

Windows firewall allowed programs

Exceptions allow programs to access to the Internet through an outbound connections

Firewall exception for 'C:\Program Files\Common Files\AOL\acs\AOLacsd.exe'

Network connections

Access through an approved Windows firewall exception

[UDP] listens on port 49815

[UDP] listens on port 63248

[UDP] listens on port 49153

[UDP] listens on port 54659

[UDP] listens on port 56711

[UDP] listens on port 54899

[UDP] listens on port 49936

[UDP] listens on port 65368

[UDP] listens on port 50550

[UDP] listens on port 50835

[UDP] listens on port 54702

[UDP] listens on port 64551

[UDP] listens on port 59369

[UDP] listens on port 56528

[UDP] listens on port 49164

Resource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)

Averages

CPU
Total CPU:	0.00194276%	0.028634%
Kernel CPU:	0.00157562%	0.013761%
User CPU:	0.00036713%	0.014873%
Kernel CPU time:	4,564 ms/min	100,923,805ms/min
User CPU time:	0 ms/min	0 ms/min
CPU cycles:	1,568,053/sec	17,470,203/sec
Context switches:	2/sec	284/sec
Memory
Private memory:	6.14 MB	21.59 MB
Private (maximum):	6.63 MB
Private (minimum):	3.48 MB
Non-paged memory:	6.14 MB	21.59 MB
Virtual memory:	91.08 MB	140.96 MB
Virtual memory (peak):	96.69 MB	169.69 MB
Working set:	5.15 MB	18.61 MB
Working set (peak):	9.67 MB	37.95 MB
Page faults:	144,047/min	2,039/min
I/O
I/O read transfer:	3.91 KB/sec	1.02 MB/min
I/O read operations:	4/sec	343/min
I/O write transfer:	489 Bytes/sec	274.99 KB/min
I/O write operations:	4/sec	227/min
I/O other transfer:	610 Bytes/sec	448.09 KB/min
I/O other operations:	29/sec	1,671/min
Resource allocations
Threads:	11	12
Handles:	263	600
GUI GDI count:	11	103
GUI USER count:	8	49

Process properties

Integrety level:	System
Platform:	64-bit
Command lines:	"C:\Program Files\common files\aol\acs\aolacsd.exe"
Owner:	SYSTEM
Windows Service
Service name:	SYSTEM\CurrentControlSet\Services\AOL ACS
Display name:	AOL ACS
Description:	“Connectivity engine for America Online”
Type:	Win32OwnProcess, InteractiveProcess
Parent process:	services.exe (Services and Controller app by Microsoft)

Threads

Averages

ntdll.dll
Total CPU:	0.08369040%	0.272967%
Kernel CPU:	0.00005019%	0.107585%
User CPU:	0.08364020%	0.165382%
CPU cycles:	48,501/sec	5,741,424/sec
Memory:	1.52 MB	1.16 MB
wow64.dll
Total CPU:	0.01246488%
Kernel CPU:	0.01109743%
User CPU:	0.00136746%
CPU cycles:	3,611,108/sec
Memory:	252 KB
wow64cpu.dll
Total CPU:	0.00295398%
Kernel CPU:	0.00251270%
User CPU:	0.00044129%
CPU cycles:	2,133,002/sec
Memory:	32 KB
aolacsd.dll (AOL Connectivity Service by AOL)
Total CPU:	0.00215701%
Kernel CPU:	0.00183746%
User CPU:	0.00031956%
CPU cycles:	61,756/sec
Memory:	1.28 MB
sechost.dll
Total CPU:	0.00063941%
Kernel CPU:	0.00063941%
User CPU:	0.00000000%
CPU cycles:	341,008/sec
Memory:	100 KB
AOLAcsd.exe (main module)
Total CPU:	0.00052420%
Kernel CPU:	0.00028722%
User CPU:	0.00023699%
CPU cycles:	18,830/sec
Memory:	44 KB
ADVAPI32.dll
Total CPU:	0.00008759%
Kernel CPU:	0.00006325%
User CPU:	0.00002434%
CPU cycles:	110,943/sec
Memory:	792 KB
wow64win.dll
Total CPU:	0.00005651%
Kernel CPU:	0.00000000%
User CPU:	0.00005651%
CPU cycles:	248/sec
Memory:	360 KB
WININET.dll
Total CPU:	0.00001624%
Kernel CPU:	0.00000000%
User CPU:	0.00001624%
CPU cycles:	14,880/sec
Memory:	1.11 MB

Common loaded modules

These are modules that are typiclaly loaded within the context of this process.

Distribution by Windows OS

OS version	distribution
Windows Vista Home Premium	32.76%
Windows 7 Home Premium	25.86%
Microsoft Windows XP	10.34%
Windows 7 Professional	6.90%
Windows 8 Pro	5.17%
Windows 7 Ultimate	3.45%
Windows 7 Ultimate N	3.45%
Windows Vista Ultimate	3.45%
Windows 8	3.45%
Windows 7 Enterprise	3.45%
Windows 7 Home Basic	1.72%

Distribution by country

United States installs about 89.47% of AOL Connectivity Service.

Distribution by PC manufacturer

PC Manufacturer	distribution
Dell	32.26%
ASUS	25.81%
Sony	12.90%
Hewlett-Packard	12.90%
Acer	9.68%
Samsung	6.45%

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