Extract text from Quarantined files (BAD)
To convert BAD Quarantined files to another format, you need Microsoft Exchange Server or other System software.
To convert other file formats to the "Quarantined or Failed File" file type, you need software like Microsoft Exchange Server or a similar tool.
The .bad file extension is not a single, standardized file format. Instead, it is a generic, protective extension appended by various systems - such as Microsoft Exchange Server, antivirus programs, or data recovery tools - to flag a file as undeliverable, infected, or corrupted. The biggest disadvantage of a .bad file is that its internal structure is unknown to your operating system. It could be raw MIME email text, a quarantined Windows executable, a failed ZIP archive from an email gateway, or a corrupted SQLite database from Apple iTunes. Because of this ambiguity, you cannot simply double-click the file to open it, and attempting to do so with a quarantined payload poses severe security risks.
To access the trapped data, you must first identify the file's original format. If the file is an Exchange "Badmail" non-delivery report, you need to convert it to TXT or EML to read the delivery error headers safely. If it is an isolated archive, you might need it converted to a standardized ZIP file for forensics. Our tool securely scans the internal magic bytes of your .bad file to identify its true underlying format, allowing you to convert it into a readable, safe format like PDF, TXT, or EML without risking your system's integrity.
Convert.Guru analyzes your BAD file, detects the exact format, and lets you read the text inside.
Users also converted TXT, XNK, EDB and DAT files.
If you want to convert BAD file to TXT, RTF, DOC, DOCX, ODT, PAGES, TEX, LATEX, MD, MARKDOWN, LOG or NFO, you can use Microsoft Exchange Server or similar software from the "Corrupted or Quarantined File Marker" category. In the File menu, look for Save As… or Export….
To convert PDF, DOC, ASC, TODO, NFO, MEMO, README, DOCX, JPG, TXT, NOTE or RTF files to BAD, try Microsoft Exchange Server or another comparable tool in the "Corrupted or Quarantined File Marker" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our BAD converter.