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How to Fix Unarc.dll Returned An Error Code 11 in Windows 10/11


How to Fix Unarc.dll Returned An Error Code 11 in Windows 10/11




If you are trying to install a game or an app on your Windows 10/11 PC, you may encounter an error message that says "Unarc.dll returned an error code: -11". This error means that the setup file is unable to extract the data from the compressed archive due to a faulty or missing Unarc.dll file. Unarc.dll is a dynamic link library that is used by many applications to decompress files during installation.


Unarcdll Returned An Error Code 11


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This error can be frustrating and prevent you from enjoying your favorite games or apps. Fortunately, there are some solutions that can help you fix this error and install your desired software. In this article, we will show you four methods to fix Unarc.dll returned an error code 11 in Windows 10/11.


Method 1: Clean All the Temporary Files from the System




One of the possible causes of this error is that your system does not have enough storage space to write temporary files during the installation process. To create more space, you can delete the temporary files that are stored in various locations on your PC. These files are usually not needed and can be safely removed. Here are the steps to clean all the temporary files from your system:


  • Press the Windows key + R to open the Run dialog box.



  • Type Temp and press OK. This will open the Temp folder in File Explorer.



  • Select all the files and press Shift + Delete to permanently delete them. Click Yes to confirm.



  • Repeat steps 1-3 for the following commands: %temp% and prefetch.



  • Open File Explorer and right-click on the Network option in the left pane. Select Properties and then click on Internet Options.



  • Click on Settings from the General tab. Then click on View Files.



  • Select all the files and press Shift + Delete to permanently delete them. Click Yes to confirm.



  • Restart your system and try to install the game or app again.



Method 2: Download the Missing DLL File




Another possible cause of this error is that the Unarc.dll file is missing from your system. This can happen due to accidental deletion, virus infection, or registry corruption. In this case, you can download the missing DLL file from a reliable source and place it in the appropriate directory. Here are the steps to download the missing DLL file:




  • Click on Download ZIP file under Manual Fix.