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How we can add extension in file type of open file dialod box

How add file type

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If you want to change the extension of an existing file type, then open any window, goto->tools-> folder options->view-> uncheck the option that says "hide extensions for known file types". Once you do that you'll get the filename with extension.You can necessarily change it accordingly.

Posted on Dec 13, 2008

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How to Show/Hide Extensions in Windows?

  1. Start Windows Explorer, you can do this by opening up any folder.
  2. Click Organize.
  3. Click Folder and search options.
  4. Click the View tab.
  5. Scroll down until you notice Hide extensions for known file types, un-check this line by clicking the check box. ...
  6. Click OK.

Oct 20, 2016 | Computers & Internet

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How to Show File Extensions in Windows?

Bring up a folder. Under tools select folder options. When the menu comes up click view. You will see a lot of check boxes in the file tree. You can pick the ones you like. Put a tick in the box by clicking it, or remove the tick by clicking it.
In windows 7 the most common files extension or known type are hidden. If you unclick that box you can see any file extensions. However if you need to change the name of a file, you must not alter the file extension, or type it back if you make a mistake of deleting it.

Oct 20, 2016 | Computers & Internet

3 Answers

Windows 7 solution why can't i see file types or file extensions ?

Start....Type Folder options in the search box.
Select the View Tab
Then select the options you want to view.
Uncheck the box for "Hide extensions for known file types"

Caution. Be careful when displaying protected operating files and hidden files.
They are hidden for a reason, and if you are operating from an account with administrator privileges (Not a good idea for day to day stuff) you can cause carnage by deleting or modifying some of them.

Apr 16, 2014 | Microsoft Windows 7 Ultimate for PC

2 Answers

All my programs open up as a LNK file how do I fix that

Yes, go to one of the files that you KNOW what type of file it is like a xxxxx.PDF. that file opens with adobe then "right click" to open the menu of choices with that file. EXAMPLE "xxxxx.PDF" and select the menu choice "OPEN WITH"
A new menu box will open and you should be able to select the correct program to open the file with, i.e. "ADOBE READER" for the .PDF files. (BE CAREFUL), usually in the bottom left corner of this menu screen there will be a small check box with the question "open all files like this/or type" using this program. If you only use ADOBE for PDF files which you probably do then it's ok. BUT if it is a plain text file or a binary file that has been set to be opened with something else then you have more serious issues to fix.
The same is with MS Word files Power Point ect. select the appropriate program under "open with" to correct the file relationship

Mar 26, 2014 | Microsoft Windows 7 Ultimate, Full Version...

5 Answers

I'm unable to rename any file in win XP,a message appears "If you change a file name extension,the file may become unusable" Plz help

Go to control panel then go to folder option then click on view tab. On the list you'll find a option named "Hide extensions for known file type". Enable this option and click OK. Now you can rename your files easily.

Mar 13, 2011 | Microsoft Windows XP Professional

1 Answer

Icon change

It sounds as if you might be altering the file type extension.

A file name is made up of 2 parts - The actual name (the bit before the . ) and the file type extension (the 3 or 4 letters after the . )

By default, the file type extensions are normally hidden (as this prevents problems), but it is possible to get XP to show them by the following method:

Open 'My Documents' folder. Click Tools>Folder Options>View. Scroll down the lsit and uncheck 'hide extensions for known file types' Click Ok.

If you have got the file extensions showing and you were to change or delete one the icon will change. The file type extension basically tells the computer what type of file it is, and which program should open it (and shows the appropriate programs icon.)

Ensure your files have the correct extension and the reverse the above steps to 'hide' them.

Hope this helps.

Jun 29, 2009 | Computers & Internet

1 Answer


  1. Click the Microsoft Office Button default.aspx?assetid=za100771021033, click Excel Options, and then click Add-Ins.
    1. View the add-ins and application extensions that are categorized as follows:
    2. Active Application Add-ins Lists the extensions that are registered and currently running in your Office program.
    • Inactive Application Add-ins Lists the add-ins that are present on your computer but are not currently loaded. For example, smart tags or XML Schemas are active only when the document that references them is open. Another example is the COM add-ins that are listed in the COM Add-ins dialog box. If the check box for a COM add-in is selected, the add-in is active. If the check box for a COM add-in is cleared, the add-in is inactive. To learn how to open the COM Add-in dialog box, see the section called Turn off or manage the installed add-ins.
    • Document Related Add-ins Lists template files that are referenced by currently open documents.
    • Disabled Application Add-ins Lists add-ins that were automatically disabled because they are causing Office programs to crash.
  • Mar 28, 2009 | Microsoft Windows XP Professional

    1 Answer

    Rename file extensions

    To display file name extensionsDepending on your settings, the file name extensions of your files may not be visible. To display the file name extensions of your files if they are not visible, follow these steps:
    1. Open My Computer or Windows Explorer.
    2. On the Tools menu, click Folder Options.
    3. Click the View tab.
    4. In the Advanced settings box, click to clear the Hide extensions for known file types check box.
    5. Click OK.
    Hope This Helps, Please Rate My Response! Thanks! Prem

    Feb 19, 2009 | Microsoft Windows XP Professional With...

    1 Answer

    I'm unable to open .eml attachment in Windows Vista.

    Here's some info: E-mail message saved by Microsoft Outlook or other e-mail program; may also contain an e-mail attachment, or file sent with the message. Note: If EML files will not open in Outlook Express, try the following:
    1. Open My Computer.
    2. Select Folder Options from the Tools menu.
    3. Click the File Types tab.
    4. Under Registered file types, select EML Outlook Express Mail Message, then click Advanced.
    5. Click Open, then click Edit.
    6. Type the following line in the "Application used to perform action" box:
      "C:\Program Files\Outlook Express\MSIMN.EXE" /eml:%1
    7. Click OK twice, then close the window.
    EML files may also be opened in Internet Explorer since they are formatted the same as .MHT files; changing the file extension from ".eml" to ".mht" should cause the file to open directly in Internet Explorer.
    Hope this helps.

    Dec 25, 2008 | Computers & Internet

    1 Answer

    Unrecognized file type

    Good Day, This can be fixed, here's a step by step 1. Open folder containing any of the above said files. 2. Click TOOLS in the upper tool bar 3. Then FOLDER OPTIONS 4. Click the FILE TYPE tab at top of window 5. Scroll through list and find above said file type 6. Then click change button, and select from this list the program that you need to open this file with. Hint:If this file type is not in the first list you can click the new button and create it. Hope this helps

    Oct 01, 2007 | Computers & Internet

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