How to remove the btasv virus

Most antivirus programs identify btasv.dll as malware.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the btasv.dll malware

Btasv.dll file information

The process known as Macromedia project or Flash bar appears to belong to software Ms Bar or Flash plugin by Som ( or Microsoft (

Description: Btasv.dll is not essential for Windows and will often cause problems. Btasv.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 50,176 bytes (50% of all occurrences), 52,224 bytes, 53,248 bytes or 54,272 bytes. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include B8754114-53BA-4b82-9B87-AB07B3AC07BB or 3B3F8962-EF26-49e6-8863-B5675E477EA8 or 5597409F-8C79-4367-951E-1BC8BD6672B5 or DF50F976-592A-47a4-81C7-AD34D5A3A947. The program is not visible. The btasv.dll file is an unknown file in the Windows folder. It is able to monitor web browsers. There is no detailed description of this service. It is not a Windows core file. btasv.dll appears to be a compressed file. Therefore the technical security rating is 71% dangerous; however you should also read the user reviews.

Recommended: Identify btasv.dll related errors

Important: You should check the btasv.dll process on your PC to see if it is a threat. If Macromedia project has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


User Comments

This is malware

Summary: Average user rating of btasv.dll: based on 1 vote with 1 user comment. One user thinks btasv.dll is dangerous and recommends removing it.

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Best practices for resolving btasv issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active btasv process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the btasv.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

btasv.dll [all]