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12M file format description

12M file format

We made this page to help you understand how to work with 12M files. Here, you can find info on software that can handle these files. It includes simple programs for opening and converting them.

Learn about the 12M file and its functions here!

We also explain how to convert them into other types. It's simple and hassle-free. For opening or changing 12M files, this page offers all the tools you need.

#1 Lotus 1-2-3 Smartmaster Template

The WT4 file is categorized under Document. It is associated with Lotus 1-2-3, serving as a Lotus 1-2-3 Smartmaster Template. Lotus 1-2-3 is a spreadsheet program designed for IBM-compatible personal computers by Lotus Corporation in 1982. It seems that Lotus 1-2-3 is no longer supported by the maker.

Application:Lotus 1-2-3
Category:Document files
Mime-type:application/vnd.lotus-1-2-3
Magic:- / -
Aliases:12m

Lotus 1-2-3 Smartmaster Template related extensions

  • ymap MindGenius v1 Document
  • hypetemplate Hype Document Template
  • sdox sharpDox Document
  • gul JungUm Global Document

Did someone accidentally misspell the 12M filename?

The 12M filename extension may be misspelled. We compiled a list of similar file extensions to help you find errors.

Filename extensions similar to 12M:

Windows can't open your 12M file?

When you try to open a file by double-clicking it, Windows looks at the file's name to figure out what to do. If Windows doesn't know the file type, it'll ask you to choose an app to open this 12M file.

To set the 12M file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. In the Default apps section, you will find various categories. They include Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate. For example, choose Photos for image files, or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the app you want is not listed, click on More apps to see more options. Or, click on Look for an app in the Microsoft Store to search for apps.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set 12M file association. Many apps can open files. They don't need a specific file association to be set.

Handle 12M files with care

Exercise caution when handling 12M files from unknown sources. Files from certain sources can threaten your computer's security. They might contain malware, viruses, or harmful software. To minimize risks, avoid downloading or opening unfamiliar 12M files. Use trusted antivirus software to scan files from unknown sources before opening.

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