What is agr64svc.exe?

The genuine agr64svc.exe file is a software component of Agere Soft Modem by Agere Systems.
Agr64svc.exe is an executable file that belongs to the Agere Soft Modem, a proprietory modem that uses two-chips and a single-lane PCI-Express interface. This is not a critical Windows component and should be removed if known to cause problems. Terminating this process might disconnect an active Internet connection. The Agere AMR Softmodem takes up more resources from the computer, especially the CPU, to perform part of a hardware modem's job. Soft modems are relatively cheaper to manufacture than their hardware counterparts but are more resource intensive. This is not an issue, however, for faster computers. Agere Systems Inc. was an American company that designed and manufactured integrated circuit components. The company was formed in 2002 after being spun out from Lucent Technologies. In 2007, it was merged into the LSI Corporation. Agere Systems was based in Allentown, Pennsylvania, USA.

Agr64Svc stands for Agere 64-bit Soft Modem Call Progress Service

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the agr64svc.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Agr64svc.exe file information

Windows Task Manager with agr64svc
Agr64svc.exe process in Windows Task Manager

The process known as Agere Soft Modem Call Progress Service or LSI Soft Modem Call Progress Service

belongs to software Agere Soft Modem Call Progress Service or LSI HDA Modem or Agere Modem Call Progress Audio or TOSHIBA Software Modem or LSI PCI-SV92EX Soft Modem or LSI Soft Modem Call Progress Service or Agere Systems PCI-SV92EX Soft Modem or HP MULTIPLE MODEM INSTALLER for VISTA

by Agere Systems ( or LSI (

Description: Agr64svc.exe is not essential for Windows and will often cause problems. Agr64svc.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 16,896 bytes (85% of all occurrences), 28,672 bytes or 42,096 bytes. 
The program has no visible window. The file is a Microsoft signed file. The agr64svc.exe file is not a Windows core file. Therefore the technical security rating is 15% dangerous, however you should also read the user reviews.

Uninstalling this variant: It is possible to safely remove the program using the uninstall program of LSI HDA Modem or LSI PCI-SV92EX Soft Modem (Control Panel ⇒ Uninstall a Program).

Recommended: Identify agr64svc.exe related errors

Important: Some malware camouflages itself as agr64svc.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the agr64svc.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

is it safe to stop it from running
I have stopped it from running on many occasions to see if it would change how the computer runs. It runs slightly faster without it being active and there are no crashes or significant factors I can find either way. However to me it looks like malware.

Summary: Average user rating of agr64svc.exe: based on 1 vote with 2 user comments. One user thinks it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving agr64svc issues

A clean and tidy computer is the key requirement for avoiding problems with agr64svc. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the agr64svc.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

agr64svc.exe [all]