Rapi.dll Error Messages
There are several different ways that rapi.dll errors can show up on your computer. Here are some of the more common ways that you might see rapi.dll errors:
- "Rapi.dll Not Found"
- "This application failed to start because rapi.dll was not found. Re-installing the application may fix this problem."
- "Cannot find [PATH]\rapi.dll"
- "The file rapi.dll is missing."
- "Cannot start [APPLICATION]. A required component is missing: rapi.dll. Please install [APPLICATION] again."
Rapi.dll error messages might appear while using or installing certain programs, when Windows starts or shuts down, or maybe even during a Windows installation.
The context of the rapi.dll error is an important piece of information that will be helpful while solving the problem.
Cause of Rapi.dll Errors
Rapi.dll errors are caused by situations that lead to the removal or corruption of the rapi DLL file.
How To Fix Rapi.dll ErrorsImportant: Do not download rapi.dll from a "DLL download" website. There are many reasons why downloading a DLL file is a bad idea. If you need a copy of rapi.dll, it's best to obtain it from its original, legitimate source.
Note: Start Windows in Safe Mode to complete any of the following steps if you're unable to access Windows normally due to the rapi.dll error.
If you suspect that you've accidentally deleted rapi.dll but you've already emptied the Recycle Bin, you may be able to recover rapi.dll with a free file recovery program.
Important: Recovering a deleted copy of rapi.dll with a file recovery program is a smart idea only if you're confident you've deleted the file yourself and that it was working properly before you did that.
Run a virus/malware scan of your entire system. Some rapi.dll errors could be related to a virus or other malware infection on your computer that has damaged the DLL file. It's even possible that the rapi.dll error you're seeing is related to a hostile program that's masquerading as the file.
Reinstall the program that uses the rapi.dll file. If the rapi.dll DLL error occurs when you use a particular program, reinstalling the program should replace the file.
Important: Try your best to complete this step. Reinstalling the program that provides the rapi.dll file, if possible, is a likely solution to this DLL error.
Update the drivers for hardware devices that might be related to rapi.dll. If, for example, you're receiving a "The file rapi.dll is missing" error when you play a 3D video game, try updating the drivers for your video card.
Note: The rapi.dll file may or may not be related to video cards - this was just an example. The key here is to pay very close attention to the context of the error and troubleshoot accordingly.
Roll back a driver to a previously installed version if rapi.dll errors began after updating a particular hardware device's driver.
Install any available Windows updates. Many service packs and other patches replace or update some of the hundreds of Microsoft distributed DLL files on your computer. The rapi.dll file could be included in one of those updates.
Test your memory and then test your hard drive. I've left the majority of hardware troubleshooting to the last step, but your computer's memory and hard drive are easy to test and are the most likely components that might cause rapi.dll errors as they fail.
Repair your installation of Windows. If the individual rapi.dll file troubleshooting advice above is unsuccessful, performing a startup repair or repair installation should restore all Windows DLL files to their working versions.
Use a free registry cleaner to repair rapi.dll related issues in the registry. A free registry cleaner program may be able to help by removing invalid rapi.dll registry entries that might be causing the DLL error.
Important: I rarely recommend the use of registry cleaners. I've included the option here as a "last resort" attempt before the destructive step coming up next.
Perform a clean installation of Windows. A clean install of Windows will erase everything from the hard drive and install a fresh copy of Windows. If none of the steps above correct the rapi.dll error, this should be your next course of action.
Important: All the information on your hard drive will be erased during a clean install. Make sure you've made the best attempt possible to fix the rapi.dll error using a troubleshooting step prior to this one.
Troubleshoot for a hardware problem if any rapi.dll errors persist. After a clean install of Windows, your DLL problem can only be hardware related.
The rapi.dll error message could apply to any program or system that might utilize the file on any of Microsoft's operating systems including Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.
Still Having Rapi.dll Issues?
Let a community of computer support enthusiasts help out! Post the details of your rapi.dll issue in the PC Support Forum. Be sure to let us know the exact rapi.dll error message that you're seeing and what steps, if any, you've already taken to fix the problem.