171

.171Microsoft Word 2.0 Document

Microsoft · 1991

Developer
Microsoft
Category
Documents
MIME Type
application/vnd.ms-word
First Released
1991
Open Format
No
File Signature
N/A (no widely documented standard signature)
At a Glance
.171
Microsoft Word 2.0 Document

A .171 file is an old document format used by Microsoft Word versions 1.0 and 2.0, which is now largely obsolete.

Reviewed on May 2, 2026
Compression
Binary
Transparency
N/A
Editability
Low
Best for
Legacy archival

Key Features

  • Legacy document format from early Microsoft Word.
  • Proprietary binary file structure.
  • Supports basic text and formatting.
  • Requires conversion for modern use.

Best For

  • Storing documents for extremely old Microsoft Word versions.
  • Niche archival needs where format compatibility is not a concern.

Less Ideal For

  • Creating new documents.
  • Sharing documents with modern users.
  • Collaboration on documents.
  • Long-term storage without conversion.

Common Use Cases

  • Archival of very old documents.
  • Retrieval from legacy computer systems.
  • Historical data recovery.

How to Open It

  1. Attempt to open with Microsoft WordPad (limited success expected).
  2. Use a file conversion utility that specifically supports .171 to .docx or .rtf.
  3. If possible, locate the original Microsoft Word 1.0 or 2.0 software, though this is highly impractical and not recommended for security reasons.

What is a .171 file?

The .171 file extension is associated with older versions of Microsoft Word, specifically Word for Windows 1.0 and 2.0. These documents were created using a binary file format that is proprietary to Microsoft. While these versions of Word are long obsolete, some legacy systems or archival purposes might still encounter these files. Modern word processors typically cannot open these files directly due to their outdated and incompatible format. Converting them to a more modern format like .docx is usually necessary for accessibility and compatibility.

Programs That Open .171 Files

PlatformProgram
WindowsMicrosoft Word (newer versions)PaidOfficial

How to Convert .171 Files

FormatMethod
.DOCXOnline file converters (e.g., CloudConvert, Zamzar), Legacy document conversion tools
.RTFOnline file converters, Legacy document conversion tools

Common Problems with .171 Files

⚠️ Cannot open .171 files with modern word processors.
Use a file conversion tool to convert the .171 file to a more compatible format like .docx or .rtf.
⚠️ Conversion tools fail or produce garbled text.
Ensure the conversion tool specifically supports very old Microsoft Word formats. Try different conversion services or software if one fails.

Frequently Asked Questions

What is a .171 file?

A .171 file is a document created by very early versions of Microsoft Word (1.0 and 2.0) and is now largely obsolete.

Can I open .171 files on my current computer?

Directly opening them is unlikely. You will most likely need to convert the .171 file to a modern format like .docx using a specialized conversion tool.

Is .171 a common file format today?

No, the .171 format is very uncommon and outdated, primarily encountered for historical or archival purposes.

Technical Details

The .171 format is a proprietary binary file structure used by early Microsoft Word releases. It stores text, formatting, and basic layout information. Due to its age and proprietary nature, it is not compatible with modern word processing software without conversion.

Did You Know?

Microsoft Word 2.0 was released in 1991, the same year that the World Wide Web was made publicly available.
The .171 format represents one of the earliest attempts at digital document standardization for personal computers.

Security Information

As an outdated proprietary format, there's a low risk of it containing modern malware. However, always exercise caution when opening files from unknown or untrusted sources, regardless of format. Use up-to-date antivirus software.

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