You probably reached this article because Device Manager or another tool like DXDiag reported an error (Rapi Dll), and you are not sure how to resolve it. In this post, we can help you find your Rapi Dll and suggest everything you might try to correct the error.


Just what is a DLL?
A Rapi Dll DLL is actually a library that contains code and data that you can use by multiple program as well. As an example, in Windows systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that may be found in this DLL to implement a wide open dialog box. This can help promote code reuse and efficient memory usage.

What cause of Rapi Dll

Because they are shared files, DLL files exist outside of the software application itself. Even though this provides advantages for software developers, this separation also provides an opportunity for problems to happen.Quite simply, if Windows cannot properly load your Rapi Dll file, you will encounter an error message. Please visit "Factors behind Rapi Dll Errors" below to find out more.

The mainly 7 types

How to install Rapi Dll

How to install Rapi Dll

  • We recommend that you extract Rapi Dll towards the installation directory in the program that may be requesting Rapi Dll .
  • If that doesn't work, you will have to extract Rapi Dll to your system directory. This is by default:
  • C: \Windows\System32 (Windows 7, XP and Vista8 and 10)
  • You should also place Rapi Dll in C if you use a 64-bit version of Windows: \Windows\SysWOW64\
  • Be sure overwrite any existing files (but make a backup copy of the original file).
  • Reboot your pc.
  • If the problem still occurs, try the following:
  • Open Windows Start menu and select "Run...".
  • Type CMD and press Enter.
  • Type regsvr32 Rapi Dll and press Enter.

Steps to ....

Troubleshoot Rapi Dll Error Manually.
Fix Rapi Dll by updating Windows for the latest version. Click Start button, and kind windows update inside the searching box. Then click windows update as the picture below.

Please make sure that if there is any updates need to be updated urgently. If windows shows that we now have important updates available. Please update it over time. Windows update is a crucial procedure to repair Rapi Dll problem.

Missing Rapi Dll file... Don't worry !

The First Step: Download Smart PC Fixer and install it on your hard drive.

Step Two: Double Click it and click on "System Fix", Select "Dll Download".

Step Three: Type your missing Rapi Dll and click "Search", Then download the files and use Smart PC Fixer to register it for yourself.


  • Warning&Tips:
    1. No matter which steps you should do for your computer, you have better run as being an administrator.
    2. According to the version of Windows you're using, the above steps may be slightly different, but the basic process is mostly the same.
    3.Protect against Rapi Dll errors by regularly scanning your hard disk drive for viruses. Moreover, make certain your personal computer has the latest software updates.
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