What is cdac11ba.exe?

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 cdac11ba.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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Cdac11ba.exe file information

Windows Task Manager with cdac11ba
Cdac11ba.exe process in Windows Task Manager

The process known as Macrovision RTS Service or C-Dilla RTS Service belongs to software SafeCast Windows NT or C-DillaCdaC11BA by Macrovision ( or C-Dilla (

Description: Cdac11ba.exe is not essential for Windows and will often cause problems. Cdac11ba.exe is located in the C:\Windows\System32\drivers folder or sometimes in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 54,784 bytes (50% of all occurrences), 39,936 bytes and 5 more variants. 
The program has no visible window. The cdac11ba.exe file is not a Windows core file. The file is located in the Windows folder, but it is not a Windows core file. Therefore the technical security rating is 51% dangerous, however you should also read the user reviews.

Recommended: Identify cdac11ba.exe related errors

Important: Some malware also uses the file name cdac11ba.exe, for example W32.Xpiro.D or Trojan.Paccyn!inf (detected by Symantec), and Virus.Win32.Expiro.w or (detected by Kaspersky). Therefore, you should check the cdac11ba.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

Most likely came to my computer with Mechwarrior installation. Without my knowlage or aproval installed itself to do something undesirable. Id definitely go out of my way to remove it. After removing the file and killing process, my torrent files are noticeably faster.
as with all autodesk files it seems to cause conflicts with dassault solidworks
It is part of the Macrovision copy protection scheme. I have been using MathCad for many years and it came as part of the MathCad 11 Single user upgrade. It miss behaves occasionally and tells me that my license is already in use in another computer. It seems to conflict with Dragon Naturally Speaking version 10 which when I installed it MathCad died.
I think it comes with autocad 2004 as I also installed autocad and now I see cdac11ba.exe in task manager.
It showed up on my computer when I downloaded Adobe Reader X. Doesn't seem to have affected my systems - yet.
Installed with Mechwarrior 4(any version). Prevents you from using disk images instead of the real cd, the "no cd hacks" for the game should be used and service + exe should be deleted/disabled
  Carl "bunnytaur" Stears  
Don't know where it came from. Appeared suddenly but I had not installed any new software. Disable it using services if you can live without it. It eats up resources and slows down the computer.
its come with AutoCad 2004
More comments can be found here:
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Rating chart

Summary: Average user rating of cdac11ba.exe: based on 104 votes with 9 reviews. 28 users think cdac11ba.exe is essential for Windows or an installed application. 8 users think it's probably harmless. 35 users think it's neither essential nor dangerous. 17 users suspect danger. 16 users think cdac11ba.exe is dangerous and recommend removing it. 11 users don't grade cdac11ba.exe ("not sure about it").

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Best practices for resolving cdac11ba issues

A clean and tidy computer is the key requirement for avoiding problems with cdac11ba. 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 cdac11ba.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

cdac11ba.exe [all]