Software & Apps Windows How to Fix Msvcr71.dll Not Found or Missing Errors A troubleshooting guide for Msvcr71.dll errors By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated November 20, 2019 Windows The Ultimate Laptop Buying Guide Tweet Share Email An msvcr71.dll error happens when the DLL file becomes missing, deleted, or corrupted in such a way that the software relying on it can not use the file as it was intended to be used. A problem with the registry, a virus infection or malicious program installed to the computer, or even an issue with the computer hardware may be the cause of your msvcr71.dll errors. You might see an msvcr71.dll error message on any Windows program or operating system that uses the file, like Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000. Msvcr71.dll Errors Msvcr71.dll Error Message. When issues with this particular DLL file occur, the errors that indicate a problem with msvcr71.dll may be presented in any of the following error messages: Msvcr71.dll Not FoundThis application failed to start because msvcr71.dll was not found. Re-installing the application may fix this problem.The program can’t start because msvcr71.dll is missing from your computer. Try reinstalling the program to fix this program.Cannot find [PATH]\msvcr71.dllThe file msvcr71.dll is missing.Cannot start [APPLICATION]. A required component is missing: msvcr71.dll. Please install [APPLICATION] again. Most msvcr71.dll error messages appear when trying to run a particular program, but might also be seen when installing a particular application, starting or shutting down Windows, or possibly even when installing a fresh version of Windows. How to Fix Msvcr71.dll Errors Never download DLL files from a website that you don't 100% trust. It's important to only use trusted, official sources when downloading files like msvcr71.dll. Starting Windows in Safe Mode may be your only option for completing most of these steps if the msvcr71.dll file is preventing Windows from starting up normally. Restore msvcr71.dll from the Recycle Bin. A missing msvcr71.dll file may simply mean that you or a program on your computer deleted the file, thus sending it to the Recycle Bin. Msvcr71.dll files that you know were in the Recycle Bin at one point, but have since been "permanently" deleted with the emptying of the Recycle Bin, might be able to be recovered with a free file recovery program. This step should only be performed if you're confident that the msvcr71.dll file you're restoring isn't actually a virus or a malformed DLL file that was deleted for a good reason in the first place. If you simply deleted it by accident, then restoring it is completely fine. Run a virus/malware scan of your entire system. If you do suspect that the msvcr71.dll errors are somehow related to malicious programs or viruses that are on your computer, then running a scan to remove the infection may resolve the DLL problems. Reinstall the program that uses the msvcr71.dll file. If running a specific program is what prompts you to see the error, then reinstalling it may refresh the file and remove the error. Try your best to complete this step. The "official" msvcr71.dll file that Windows keeps is located in a subfolder of the C:\Windows\ directory, so reinstalling the software most likely takes a fresh copy of the DLL file from the folder. Search your computer for an msvcr71.dll backup. It's possible that the program that provided the original DLL file has a second (or even third) copy elsewhere that you can move to the location from where msvcr71.dll is missing. For example, not only does Windows keep a copy of msvcr71.dll in a \Windows\ folder, but so, too, does Adobe Photoshop, SUPERAntiSpyware, and Adobe Acrobat, among others. It should be clear where you should copy msvcr71.dll to if the DLL error message specifies which folder the DLL file is missing from. There are lots of free file search tools you can use if you don't want to use the built-in search option in Windows. Everything is one example. Edit the Windows registry if your particular msvcr71.dll error is related to SQL Developer. Follow these instructions at OracleNZ to make the specific registry edits required to fix this issue. This DLL fix is only appropriate if you're experiencing an "msvcr71.dll is missing" when opening SQL Developer for the first time after installing it, which seems to be a common problem. Download the msvcr71.dll file from AddictiveTips. Yes, we just warned above about downloading DLL files, but AddictiveTips is a website that we trust that provides a clean, unaltered msvcr71.dll file that you can download if your computer is missing the DLL. Once you've downloaded msvcr71.dll and placed in the appropriate folder as described through that link above, you might need to register the DLL file. To do that, open Command Prompt and enter regsvr32 msvcr71.dll. Use System Restore to undo recent system changes. If the DLL persists at this point, you might want to try reverting your computer to a previous time using System Restore. This will change lots of important system files back to the state they were in at an earlier date, which may be what you need to do if your msvcr71.dll error was caused by a change made to an important file or configuration. Update the drivers for hardware devices that might be related to msvcr71.dll. Similar to Step 3, if you're receiving a "The file msvcr71.dll is missing" error when doing something specific like playing a 3D video game, for example, try updating the drivers for your video card. The msvcr71.dll file may have nothing at all to do with video cards; this was just an example to illustrate that you should watch for what's happening at the time of the error to adjust how you troubleshoot the problem. Roll back a driver to a previously installed version. If the msvcr71.dll errors starting after you updated a specific device driver, then it's likely resolved by removing the driver and reverting back to the previously installed one. Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the DLL file. Depending on your version of Windows, the msvcr71.dll file might be supplied by Microsoft, in which case using the System File Checker (SFC) tool could restore it back to a normal state. Install any outstanding Windows updates. The service packs and patches supplied through Windows Update might update or completely replace some of the several dozen Microsoft distributed DLL files on your computer. It may be the case that the problem msvcr71.dll file is included in one of those updates. Test the RAM and then test your hard drive. Your computer's memory and hard drive are pretty easy to test, and a failure with one of them may prove to be the culprit of any msvcr71.dll errors. You might end up having to replace the memory or replace the hard drive if any of these tests fail. Repair your installation of Windows if the steps above still haven't fixed the msvcr71.dll file errors. Doing this should restore all the DLL files back to their working versions as if they haven't been modified or used. Use a free registry cleaner to repair issues related to this file. Registry cleaning tools can usually solve problems relating to DLL files by removing invalid registry entries that could be causing the DLL error. Perform a clean installation of Windows if none of the steps from above have been able to fix the msvcr71.dll error. Just as it sounds, a clean install of Windows erases the current installation plus all of the files on the hard drive, and will then install a new, fresh copy of the OS. Please don't skip directly to this step before trying the others from above. This is the most destructive resolution because it removes everything and has you start over from scratch. It should only be carried out if you've had no luck with the prior steps. Troubleshoot for a hardware problem if none of the software related steps have proven helpful. At this point, the only possible cause of the msvcr71.dll errors at this point is a malfunctioning piece of hardware. Still Having Msvcr71.dll Issues? Would you rather someone else fix this DLL issue for you? See How Do I Get My Computer Fixed? for a full list of your support options, plus help with everything along the way like figuring out repair costs, saving your files if you need them moved elsewhere, choosing a repair service, and a whole lot more.