What is rdvchg.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 rdvchg.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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Rdvchg.exe file information

Windows Task Manager with rdvchg
Rdvchg.exe process in Windows Task Manager

The process known as C-motech Run Time Device Change belongs to software Sprint SmartView or CDU680DORA USB Modem or C-motech Run Time Device Change by C-motech Co. (

Description: Rdvchg.exe is not essential for the Windows OS and causes relatively few problems. Rdvchg.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 316,736 bytes (69% of all occurrences), 307,200 bytes, 316,664 bytes, 316,672 bytes or 312,568 bytes. 
The program has no visible window. The rdvchg.exe file is a Verisign signed file. The file has a digital signature. It is not a Windows system file. The software starts when Windows starts (see Registry key: MACHINE\Run). Rdvchg.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 25% dangerous.

Uninstalling this variant: You can uninstall the program Sprint SmartView or CDU680DORA USB Modem, update it, or try to get help from the software vendor. Click on to update it, click on or to visit the vendor's website, or click on Sprint SmartView or CDU680DORA USB Modem in Windows Control Panel (section Software or Programs) to uninstall it.

Recommended: Identify rdvchg.exe related errors

Important: Some malware camouflages itself as rdvchg.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the rdvchg.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.


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Best practices for resolving rdvchg issues

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

rdvchg.exe [all]