To fix the unarc.dll error code 6 when installing , you need to address the underlying cause: the installer's inability to read or decompress the game's archive files
. This "Error Code 6" typically signifies that the archive data is corrupted or the unpacking process is being blocked. 1. Simplify File Paths and Language
The installer often fails if the path contains non-English characters or is too long. Rename the folder
: Ensure the setup files and the target installation folder have short names (e.g., Remove special characters
: Avoid symbols or non-English characters in the folder path. Move the installer
: Copy the setup files directly to the root of your drive (e.g., ) before running it. 2. Disable Security and UAC
Antivirus software can flag the decompression process as suspicious and block it. Turn off Antivirus : Disable your antivirus or Windows Defender temporarily during the installation. Disable UAC
: Go to "User Account Control" in Windows and set it to "Never Notify". Run as Admin : Right-click the and select Run as Administrator 3. Manage Memory and Processor Usage To fix the unarc
Decompression is highly resource-intensive and can crash if your hardware is pushed too hard. How to Fix Unarc.dll Error While Installing Games (2025)
The Unarc.dll error code -6 is a common decompression failure typically encountered when installing highly compressed game files, such as
repacks. The specific "exclusive" feature or root cause of error code 6 often points to archive data corruption or a mismatch during the extraction process. Direct Solutions for FIFA 13
Disable Antivirus & Firewall: Antivirus programs frequently flag decompression processes as suspicious and block or "eat" essential files. Disable them temporarily during installation.
Increase Virtual Memory (Pagefile): Repacks require significant temporary memory to unpack.
Go to System Properties > Advanced > Performance Settings > Advanced > Virtual Memory.
Set a custom size (e.g., 4096 MB initial and 8192 MB maximum) for your primary drive. Restart PC → press F8 (or Shift +
Clean Installation Path: Ensure the installation folder does not contain special characters or non-English symbols (e.g., #, @, !), as these can cause the installer to misread the directory.
Limit CPU Cores: Some older installers struggle with modern high-core CPUs. You can limit the installer to 2–4 cores via Task Manager by right-clicking the setup process and selecting Set Affinity.
Verify Source Files: Use any built-in file verification tools (like a "Verify BIN files" .exe included with many repacks) to check if your download is corrupted before attempting another installation. System File Repairs
If the issue persists, your system's core decompression files might be missing or corrupted:
Run System File Checker: Open Command Prompt as administrator and type sfc /scannow to repair system-level DLL issues.
Re-register DLLs: Use the command regsvr32 isdone.dll and regsvr32 unarc.dll in an administrator Command Prompt to manually re-register the libraries.
Manual Replacement: Download clean versions of unarc.dll and isdone.dll and place them in C:\Windows\System32 (for 32-bit) or C:\Windows\SysWOW64 (for 64-bit). unarc.dll Error Windows 11 | 2 Ways To FIX | 2021 Quick Fixes (Try in Order)
The "unarc.dll error code 6" typically occurs during the installation of compressed game files (like FIFA 13
repacks) when the installer fails to read or decompress the archive data. This is often due to insufficient disk space, antivirus interference, or corrupted temporary files. Quick Fixes for FIFA 13 Error Code 6
Verify Disk Space: Ensure your target drive has enough free space for both the installer and the fully uncompressed game files.
Run as Administrator: Right-click the setup.exe and select Run as administrator to ensure the installer has permission to write files to your drive.
Disable Antivirus & Firewall: Security software often blocks the decompression process. Temporarily disable Windows Defender and your antivirus before restarting the installation.
Shorten File Paths: Move the installation folder to the root of your drive (e.g., C:\FIFA13) and ensure the path contains no non-English characters or symbols. Advanced Troubleshooting Steps How do you fix missing dll files on Windows 11?
Background programs can conflict.
