I/O errors in the scan report
The Bitdefender scanning engine indicates the number of I/O errors within the Statistics section of the scan report.
An I/O error is counted every time the scanning engine is denied access to a file. The files for which an I/O error is returned include: operating system files, files in use, and user-protected files.
• Operating system files: These files are in use by the Windows operating system and the scanning engine is permanently denied access to them. For example, the paging file used for storing the system virtual memory is inaccessible to the antivirus.
• Files in use: These files are in use by other software and the scanning engine is temporarily denied access to them. For example, using editing software during a scan will deny the access to the files opened in the editing software. Closing the editing software before starting the scan will allow the scanning engine to access these files.
• User-protected files: The user initiating the scan is denied the access to these files. For example, although a user is allowed to scan the files contained in his/her home folder on a file server, he/she will not be able to scan the files from the other users' home folders stored on the same file server.
To reduce the number of I/O errors, close all other software before initiating the scan.