Extract text from Windows troubleshooting packages (DIAGCAB)
To convert DIAGCAB packages to another format, you need Microsoft Windows or other System software.
To convert other file formats to the "Diagnostic Package" file type, you need software like Microsoft Windows or a similar tool.
A .diagcab file is a Windows Diagnostics Cabinet file used by the Windows Troubleshooting Platform (WTP). It is essentially a compressed archive that bundles PowerShell scripts, XML manifests, and localized string resources designed to automatically detect and repair system issues. Usually, it is executed by the built-in Microsoft Diagnostics Tool (msdt.exe) on Windows operating systems.
The primary disadvantage of the .diagcab format is its strict limitation to the Windows ecosystem. It cannot be executed natively on macOS, Linux, or mobile devices. Furthermore, because it contains executable scripts, downloading a .diagcab file from an untrusted source poses significant security risks. The scripts run with elevated system privileges, making it a potential vector for malware. Standard document converters completely fail to process this format because they attempt to read it as media rather than a system archive.
Since you cannot "convert" a .diagcab into a standard document format like PDF or DOCX, the best pragmatic solution is to extract its contents. Structurally, the file is a standard Cabinet (.CAB) archive. Converting it to ZIP or CAB allows you to safely inspect the underlying XML files and scripts without accidentally triggering them.
Explain why this file format is difficult to open or convert. Emphasize that often only the original software can properly read or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your DIAGCAB file, detects the exact format, and lets you read the text inside.
If you want to convert DIAGCAB file to SYS, DLL, EXE, DRV, VXD, 386, COM, BAT, CMD, SCR, PIF or LNK, you can use Microsoft Windows or similar software from the "System Troubleshooting Archive" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to DIAGCAB, try Microsoft Windows or another comparable tool in the "System Troubleshooting Archive" 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 DIAGCAB converter.