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.SAM file extension

To open .SAM files on Windows, check the file properties and confirm it is a Lotus Word Pro/Ami Pro document (often associated with application/vnd.lotus-wordpro).

To open a .sam file, use software that supports Lotus Word Pro (Ami Pro) documents (MIME type: application/vnd.lotus-wordpro). If your device does not have compatible software, transfer the file to a desktop and convert it there rather than renaming the extension.

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Last updated: June 11, 2026 · Reviewed by Julian Stricker

What “reviewed” means on this page
  • Format fit: whether the “what is this file?” description matches common real-world use of the extension, including category, typical MIME types, and aliases.
  • Opening paths: whether Windows / macOS / Linux steps read plausibly for current OS dialogs and default apps; we remove fantasy menus and unsafe shortcuts.
  • Security framing: whether risk notes match the extension class (for example executables vs plain data) and whether affiliate wording does not contradict the security section.
  • Sources and further reading: whether external links point to vendors, standards bodies, or other primary references where possible; we avoid inventing details we cannot ground.
  • Limits: this is clarity and safety-messaging QA, not a guarantee that every statement is exhaustive or that every binary you download is harmless.

Full methodology in the Imprint — The Imprint also states where AI is used and what that does—and does not—replace.

Open on your device

Choose your operating system for a dedicated step-by-step opening guide.

How to open .SAM files

Use these platform-specific instructions to open .SAM files safely.

Windows

  1. Check the file properties and confirm it is a Lotus Word Pro/Ami Pro document (often associated with application/vnd.lotus-wordpro).
  2. Try opening it with software that supports Lotus Word Pro documents (legacy Lotus/IBM-compatible office software).
  3. If it still won’t open, use that software’s export/save-as feature to convert it to a modern format and then open the converted file.
Full Windows guide

Mac

  1. macOS typically has no built-in support for Lotus Word Pro/Ami Pro .sam documents.
  2. Transfer the .sam file to a Windows or Linux desktop that has compatible software to open/convert it.
  3. After conversion (for example, to PDF), open the converted file on macOS.
Full Mac guide

Linux

  1. In your file manager, try opening the .sam file; Linux desktops may identify it via the shared MIME database (freedesktop.org).
  2. If no application is offered, you likely do not have a compatible Lotus Word Pro-capable program installed; use a desktop system that can open it and export to a modern format.
  3. If the file is identified incorrectly, confirm the extension and source, then retry after obtaining the correct document viewer/converter for Lotus Word Pro files.
Full Linux guide

iOS

  1. iOS typically cannot open legacy Lotus Word Pro/Ami Pro .sam documents directly; transfer the file to a desktop to convert it (for example, to PDF) and then view it on iOS.
Full iOS guide

Android

  1. Android typically cannot open legacy Lotus Word Pro/Ami Pro .sam documents directly; transfer the file to a desktop to convert it (for example, to PDF) and then view it on Android.
Full Android guide

Security notes

  • Treat .sam files as untrusted input when they come from unknown sources: they are complex legacy document formats and have historically relied on older parsers that may not be hardened.
  • Prefer opening legacy documents in a conversion workflow (open/export to PDF) rather than enabling editing in multiple tools, which reduces exposure to obscure parsing paths.
  • If a .sam file is unexpectedly received (especially with urgent instructions), verify the sender out-of-band before opening or converting.

If you did not expect this file

This extension is usually plain data, text, or structured content—not a program by itself. The practical risk is social engineering (a scam attachment or misleading filename). For trusted senders you rarely need heavy-handed antivirus wording; use these tools when you want an extra check on unexpected downloads.

Avast

Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.

Norton

Norton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.

We may earn a commission when you use affiliate links. This supports our free file extension guides.

Can't open this file?

These are the most common causes and fixes when .SAM files fail to open.

Common reasons

  • No app can open the .sam file
  • File is misidentified or opens as the wrong type
  • The document opens but text/layout is garbled
  • File appears corrupted or incomplete

Fix steps

  1. Try a desktop environment where Lotus Word Pro-compatible software is available, then open and export the document to a modern format.
  2. If you are on macOS/iOS/Android, plan on conversion on a desktop first (then view the converted file).

OS-specific troubleshooting

What is a .SAM file?

The .sam extension is associated with the SAM document format used by Lotus Word Pro (and historically related to Ami Pro). In MIME registries it is linked with application/vnd.lotus-wordpro, alongside other Lotus Word Pro-related extensions. These files are typically binary word-processing documents from older office suites, so modern systems may not have built-in support.

Background

SAM is a word-processing document format most commonly tied to Lotus Word Pro and its lineage from Ami Pro. In practice, you will encounter .sam files as legacy business documents or archives originating from older Lotus/IBM office environments.

Because the format is older, many current consumer apps may not recognize it automatically. On Linux desktops, file-type detection often relies on the freedesktop.org shared MIME database (which maps extensions and “magic” signatures to MIME types), but recognition does not guarantee you have an installed application that can open it.

If you cannot open a .sam file directly, the most reliable workflow is to use a desktop application that can import the format (or a system that still has the original software) and then export/save to a modern format (such as PDF or a current word-processing format).

Common MIME types: application/vnd.lotus-wordpro

Further reading

Authoritative resources for more details on the .SAM format.

Common .SAM issues

No app can open the .sam file

Many modern systems do not include software that can read Lotus Word Pro/Ami Pro document formats.

  1. Try a desktop environment where Lotus Word Pro-compatible software is available, then open and export the document to a modern format.
  2. If you are on macOS/iOS/Android, plan on conversion on a desktop first (then view the converted file).

File is misidentified or opens as the wrong type

File associations can be missing or incorrect; on Linux, detection may rely on shared-mime-info mappings and signatures.

  1. Verify the extension is actually .sam and that the file came from a Lotus Word Pro/Ami Pro workflow.
  2. On Linux, update your shared MIME database and retry opening, then explicitly choose an appropriate document application if available.

The document opens but text/layout is garbled

Legacy word-processing formats can depend on fonts and older layout rules that do not translate cleanly in importers/converters.

  1. If possible, open the file in the original/most compatible software and export to PDF for faithful layout.
  2. Try a different import/conversion path and compare results (PDF export is often more consistent than editing formats).

File appears corrupted or incomplete

Older binary document formats are sensitive to partial downloads, email-gateway modifications, or storage damage.

  1. Re-copy or re-download the file from the original source and compare file sizes.
  2. If you can, test-opening it on a system known to handle Lotus Word Pro documents to rule out a local issue.

FAQ

What does a .sam file usually contain?

Most commonly it is a Lotus Word Pro (Ami Pro lineage) word-processing document.

Is .sam the same as a plain-text file?

No. The SAM document format is a word-processing document format (typically binary), not a plain-text format.

Can I open .sam files on my phone or tablet?

Usually not directly. The practical approach is to convert the file on a desktop system that can open Lotus Word Pro/Ami Pro documents, then view the converted output (such as PDF) on mobile.

Can I convert it by renaming the extension?

No. Renaming does not change the file’s internal format; you need an application that can import/open SAM and then export or save to another format.

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