• Unarc.dll errors usually appear when that particular DLL file from your system is missing or corrupted.
• Keeping your computer clean with a third-party app is a good way to prevent damage to DLL files.
• If the message unarc.dll file is missing shows, make sure to check the registry file.
• If nothing works to fix the unarc.dll error on a 64-bit version of Windows 10, you can try a rollback.

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Unarc.dll is one of Windows’ DLL (Dynamic Link Library) files that’s needed to run certain programs.

A unarc.dll cannot be found or unarc.dll is missing error message, or something similar might pop up when the unarc file is missing or corrupted.

The exact error messages might vary, but they will all include references to the unarc file. The unarc DLL error code 1, might be due to your antivirus settings. Disable it and check for the problem.

Some users have stated that a unarc.dll error message pops up when they try to install or run games in Windows 10. Consequently, the games don’t run or install when the error occurs.

In this case, the error message you may see states that An error occurred when unpacking: archive corrupted! Unarc.dll returned an error code:-7. You can also see some variations of this message

Counter-Strike, Civilization 5, PlayerUnknown’s Battlegrounds, and Far Cry 4 are just a few of the games that require the unarc file.

This is how users can fix unarc.dll error messages in Windows 10.

How do I fix unarc.dll errors?

1. Fix missing DLLs with specialized software

Manually editing DLL files is risky, also some websites where you can download those files can harm your PC with malware and viruses. The safest way to fix DLL errors is to use a 3rd party software.

There is various Dynamic Link Library fixer software for Windows 10, designed more specifically for resolving missing DLL error messages.

These utilities typically scan for and restore corrupted and missing DLLs and enable users to download DLL files. The software we tested is safe to use and will fix your DLL errors in no time.

Restoro is a reliable third-party DLL fixer which uses a built-in automated system and an online library full of functional DLLs to replace and repair any files that might be corrupted or damaged on your PC.

All you need to do to resolve your PC’s problems is to launch it, and simply follow the on-screen instructions to start the process, as everything else is covered by the software’s automated processes.

This is how you can fix registry errors using Restoro:

After this process is completed your PC will be as good as new, and you will no longer have to deal with BSoD errors, slow response times, or other similar issues.

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Disclaimer: This program needs to be upgraded from the free version in order to perform some specific actions.

2. Run a System File Checker scan

Right-click Command Prompt and select the Run as administrator option.

Thereafter, input sfc /scannow in the Prompt’s window and press Enter to initiate the SFC scan.

Expert Tip: Some PC issues are hard to tackle, especially when it comes to corrupted repositories or missing Windows files. If you are having troubles fixing an error, your system may be partially broken. We recommend installing Restoro, a tool that will scan your machine and identify what the fault is.
Click here to download and start repairing.

Note: The System File Checker is one utility that can potentially fix numerous DLL error messages. That utility can repair corrupted DLL system files, such as the unarc.dll. 

3. Reinstall the software

When the unarc.dll error message pops up for the specific installed game, reinstalling the game could fix the issue. Reinstalling the software will update the target folder with a missing DLL file.

Users can uninstall games and other software by pressing the Windows key + R hotkey, entering appwiz.cpl in Run, selecting the software to remove on the Programs and Features window, and clicking Uninstall.

Thereafter, reinstall the game with its disc or by opening its installer from a folder.

4. Roll back Windows 10 with System Restore

Enter rstrui in the Open text box, and press the OK button.

Select the Show more restore points setting to fully expand the list of system restore points.

Note that programs installed after a selected restore point will be removed. Press the Scan for affected programs button to see what software is deleted for a restore point.

Note: The System Restore utility is a potential resolution for unarc file errors that have come about as a consequence of recent system changes.

System Restore will probably fix a unarc file error if a user can select a restore point that will roll Windows back to a date when they could run the required software without any unarc.dll error message popping up. 

5. Scan the registry

Run CCleaner and click Registry.

Note: A unarc file error can be due to invalid registry entries. So some of the best registry cleaner software might fix unarc.dll error messages. Millions of users utilize CCleaner for registry scans and fixes.

6. Reset Windows 10

Select Reset this PC to open the window shown directly below.

Select the Keep my files option.

Note: As a last resort, you can reset Windows 10. That will effectively reinstall the platform, which will probably restore the unarc file to its original version.

However, you need to reinstall most third-party software that was previously installed after resetting Windows 10. 

Those resolutions will probably fix most unarc.dll errors so that you can run or install the required software. Some of the above resolutions might also fix similar DLL error messages that reference other files.

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