If you determine that the file is corrupted, the issue could be attributed to problems with the storage, transfer interruption, a malware infection, or file system issues. First of all, try using another version of the file or determining whether there is a backup of the file in question. You might also want to use the disk checking utility included in Windows in order to detect any file system issues. In case your file stores valuable information but does not open, avoid making any changes to the drive.