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The "Failed to start clslolz_x64.exe" error is a common issue that interrupts PC game installations, particularly when using compressed repacks from popular repackers like FitGirl, DODI, or ElAmigos. This error usually triggers a sudden setup crash, accompanied by an ISDone.dll or Unarc.dll error code.
If background apps, overlay software, or stubborn system drivers continue to conflict with the installer, running the setup in Safe Mode will bypass them.
Move your repack installer into this folder before running it again. 3. Install Missing Visual C++ Redistributables failed to start clslolz x64exe repack install
Navigate to -> Protection history . Check if cls-lolz_x64.exe was recently blocked. If it was, select it and choose Allow on device .
: Avoid installing games into deeply nested folders or folders with special characters. Install directly to paths like C:\Games\ or D:\Games\ . The "Failed to start clslolz_x64
Here is a comprehensive guide to understanding why this error happens and how to fix it. Root Causes of the Error
and select "Run as Administrator" to ensure the installer has the necessary permissions to write to system folders. Check Path for Special Characters Move your repack installer into this folder before
Right-click setup.exe > Properties > Compatibility tab. Check "Run this program in compatibility mode for:" and select an older version like Windows 7 or Windows 8 . Also, check "Disable fullscreen optimizations" for good measure.
Check the box that says "Limit installer to 2GB of RAM usage" (or similar option, depending on the repack team). The installation will take longer, but it will be much more stable. 4. Run as Administrator and Check Path Windows permissions can block the creation of files.
: Open Windows Security > Virus & threat protection > Manage settings. Toggle Real-time protection to Off.
Uncheck "Automatically manage paging file size for all drives."