What is rasauto.dll?

The genuine rasauto.dll file is a software component of Remote Access Auto Connection Manager (Rasauto) by Microsoft.
This background DLL automatically reaches out to a network address or connection when a program in Windows attempts a connection to any DNS address. It can be utilized by any Windows application, and will cause problems with applications that require network connectivity if it is not running. Founded in 1975 in New Mexico, Microsoft is now one of the largest software corporations in the world. Currently headquartered in Washington, the flagship Windows operation system is the most utilized OS in the world.

RAsAuto stands for Remote Access AutoDial Manager

Rasauto.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if rasauto.dll is a Windows system file or if it belongs to an application that you can trust.

Click to Run a Free Scan for rasauto.dll related errors

Rasauto.dll file information

The process known as Remote Access AutoDial Manager or Remote Access Auto Connection Manager (Rasauto) belongs to software Remote Access Auto Connection Manager (Rasauto) by Microsoft (

Description: Rasauto.dll is not essential for Windows and will often cause problems. Rasauto.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 88,576 bytes (75% of all occurrences), 89,088 bytes or 90,624 bytes. 
The service can be started or stopped from Services in the Control Panel or by other programs. The file is a trustworthy file from Microsoft. The program is not active. The program is not visible. It is not a Windows system file. Therefore the technical security rating is 0% dangerous; however you should also read the user reviews.

Recommended: Identify rasauto.dll related errors

If rasauto.dll is located in a subfolder of C:\Windows, the security rating is 44% dangerous. The file size is 1,794,560 bytes. There is no description of the program. The program is not visible. It is not a Windows core file. rasauto.dll appears to be a compressed file.

Important: Some malware also uses the file name rasauto.dll, for example Gen:Variant.Kazy.74594 (detected by F-Secure), and WS.Reputation.1 (detected by Symantec). Therefore, you should check the rasauto.dll 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

I had rasautou on my older computer and I know it was malware because of how the computer was acting up. I kept deleting it manually and it kept returning and then suddenly stopped. I then had the money to get my hard drive cleaned up to make sure it didn't come back.
  Pamela Butler  

Summary: Average user rating of rasauto.dll: based on 1 vote with 1 user comment. One user suspects danger.

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Best practices for resolving rasauto issues

A clean and tidy computer is the key requirement for avoiding problems with rasauto. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the rasauto.dll process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

rasauto.dll [all]