The “.vir” extension is typically appended to filenames by antivirus software to indicate a file is infected. Removing this may allow the virus to run. VIR files should not be opened manually. Instead, antivirus software should handle locating, quarantining, and removing them. VIR files are usually infected files quarantined by antivirus software. Opening them may spread the infection. However, sometimes antivirus software falsely identifies safe files. The most secure editing is directly within the antivirus program. Possible damage from opening VIR files can be irreversible. Antivirus software like Kaspersky Anti-Virus handles VIR files. The vir extension prevents access to infected files. Manual removal allows opening, enabling viruses. VIR files should be handled only by antivirus software for safety. Falsely tagged files are uncommon but do happen. Direct handling by antivirus software is most secure. Damage from opening VIR files can be irreversible.