System errors are messages telling you that something is wrong in the hardware or software of your computer. Many times the error codes come with a brief description that can help you fix the issue. Not all error codes are exactly the same. Some error codes can be difficult to comprehend and aren’t particularly useful. If you receive an error message that reads «filename too long», it means your file name or extension might be too large for the system to handle. In this case, reducing the length of your filename or releasing space on your hard disk could solve the issue.

Other error codes could indicate that the system was unable to access a device with a hard disk or use a file that was not present. These errors will usually cause your system to stop. You will see a bluescreen with a message regarding the system error.

Some older systems require that data conform to certain formats and can throw an error if there is even the slightest deviation. Contrary to this, modern systems are usually more flexible and less tolerant of information that does not conform to the format specified.