Confirm the User Account Control (UAC) prompt and attempt the installation again. 2. Check and Clear Storage Space
If you downloaded the software via a torrent, "Force Re-check" the files in your client. If you downloaded via a browser, try downloading the specific archive part again. A single missing byte can trigger error code -11. 4. Run the Installer in Compatibility Mode
Understanding the root causes is the first step toward a permanent fix. Here are the most common triggers for the "decompression failed with error code -11" message:
Are you seeing this error while installing a , or does it happen with every software installation you attempt?
: The installation drive must have enough free space for the compressed files, the temporary extraction files, and the final installed game or application. A lack of free space or improper permissions (not running the installer as an Administrator) can halt the decompression. decompression failed with error code-11
How to Fix the "Decompression Failed with Error Code -11" Error
Uncheck , select only the first 4 or 6 CPU cores , and click OK . Resume your installation window. 3. Temporarily Disable Real-Time Security Shielding
This problem frequently occurs when installing large, highly compressed software repacks or video games. During this process, the setup engine extracts massive archives directly through your system memory into the destination folder. When a memory module desynchronizes, or storage drive sectors fail to write fast enough, the decompression process crashes.
Back up critical data immediately. Consider replacing the drive. Confirm the User Account Control (UAC) prompt and
Large installation setups often require more temporary memory than your physical RAM can provide. Expanding Windows Virtual Memory allocates hard drive space to handle excess data.
If using third-party software like McAfee or Bitdefender, disable it until the installation is complete. 3. Clear Temporary Files
Temporarily disable real-time protection (disconnect from the internet first for safety). Extract the archive. If it works, add your extraction folder or the archive type to the antivirus exclusions list.
In the majority of cases, a simple using a reliable method and a different decompression tool resolves error -11 immediately. For the remaining cases, hardware diagnostics will reveal a failing drive or memory module—and replacing those components protects you from far worse data loss in the future. If you downloaded via a browser, try downloading
Use MemTest86 (bootable USB version is most reliable).
: Use a different browser or a download manager to ensure the file wasn't damaged during transfer.
Select your main OS drive (usually C:), click , and set both the Initial and Maximum size to 8192 MB (8 GB) or 16384 MB (16 GB). Click Set , then click OK , and restart your PC. 2. Configure Processor Affinity