Missing software and file drivers is often a leading cause of SUB file problems. It is highly recommended that you scan your PC using the SUB File Repair Tool. It will analyze your files and make sure you have the necessary file openers.
SUB file error symptoms can include the inability to open SUB files, program lock-ups, crashes, slow PC performance, startup and shut down problems, and installation errors.
Fixing the Problem
To ensure SUB files can be opened and read by your computer, download and run the SUB File Repair Tool. Simply click the button below to download the software.