Cannot Open Microsoft Office Starter 2010
Can't Open Microsoft Word 2010
Cannot Open Any Microsoft Office 2010 Programs
Microsoft Office Outlook 2010 Cannot Open Your Default Email Folders
Cannot Open Microsoft Office 2010 Files

Active8 months ago

I have office 2010 installed and the file was working but suddenly when I try to open itIt gives me following error

Excel cannot open the file ... because the file format or the file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.

also I tried a program to repair it.

Nov 05, 2015 When I try short cut or open a word doc I get message microsoft word 2010 cannot open.Try again or repair in control panel. To fix this problem, Click Start, Control Panel, locate MS office.
Dec 29, 2017 After the Windows 10 Fall Update, my computer has been giving me a lot of problems. One of those problems is that I can no longer start Outlook 2010. It worked for a few days, but now it won't open (when I look for Outlook in the start menu search bar, it's not even listed). Word 2010 is still. You may follow standard procedures for repairing.

What can I do?

studiohack

For Outlook 2010, you can find this file in C:Program FilesMicrosoft OfficeOffice 14 or C:Program Files (x86)Microsoft OfficeOffice 14 Right-click the Outlook.exe file, choose Properties, and then choose the Compatibility tab. Here’s what the problem looks like: Outlook 2007 or Outlook 2010 users try to open a Microsoft Word or Excel document and cannot do so. Usually this occurs with Word/Excel 2007 or 2010 only. To solve the problem of opening Word (and Excel) documents in Microsoft Outlook, try this: Close Microsoft Outlook; Open Microsoft Word.

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EsamEsam

3 Answers

Change the file extension manually from .xlsx to .xls and try again.

Cannot Open Microsoft Office Starter 2010

Mehper C. Palavuzlar

Can't Open Microsoft Word 2010

Mehper C. Palavuzlar

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Cannot Open Any Microsoft Office 2010 Programs

I ran into a similar problem when going from Office 2003 to Office 2007. To fix this, edit your registry.

For Office 2007:

For Office 2010:

You can either manually make the above entries or copy and paste the text into Notepad and save it using the '.reg' extension. If you want to make a reg file make sure you leave a space between the first line, 'Windows Registry Editor Version 5.00', and the next line, and place a space after the last line.

To save your reg file, go to File > Save As, browse to the place you want to save it and when you give it the name, enclose the name in quotes; e.g. 'ExcelExtensionHardening.reg'. Make sure to do all this in Notepad, not Word, WordPad, etc, as those programs will add things that make the reg file useless, and could possiblly hose your entire OS.

Microsoft Office Outlook 2010 Cannot Open Your Default Email Folders

To apply your reg file, just double-click it.

Cannot Open Microsoft Office 2010 Files

Gaff

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user78573user78573

Open Excel, and click on the Microsoft Icon at the top left.
In the window at the bottom is 'Excel Options'. Click it.
Then select 'Advanced' on the left side of the screen.
When the display comes up, you need to scroll almost to the bottom.
Under the blue 'General' category, will be 'Ignore other applications that use Dynamic Data Exchange ' Make sure it is not checked.
Then Test it and see whether it works