Tips - Cliccando su un file Excel si apre excel ma il file non viene visualizzato - Soluzione

Ecco un metodo per risolvere il problema che cliccando su un file .xls si apre excel ma il file non viene visualizzato.

Question I'm unable to open files by double clicking on a *. xls file and that
file can be opened by file menu option file-open - abc.xls. i m getting
problem in only .xls files. & i had reloaded office thrice on the same
system.Pls provide me the solution for this.

Prima soluzione
On the Tools menu, click Options. Click the General tab. Clear the Ignore Other Applications checkbox, and click OK.

After you do this, you should be able to open workbooks by double-clicking them in the Windows Explorer. 
lo dice anche la microsoft in questo articolo:

Seconda soluzione

What you need to do is refresh the registry settings for Excel.  Unfortunately, reloading doesn't always accomplish that.

This is the method I use to fix that problem:

Method 1: Excel
Re-register Excel with the default registry settings. To do this, follow these steps:

1. Quit all programs.
On the windows Task Bar:
2. Click Start, and then click Run.
3. In the Run dialog box, type excel /unregserver, and then click OK.
4. Again, on the taskbar, click Start, and then click Run.
5. In the Run dialog box, type excel /regserver, and then click OK.
6. Click Start, point to Programs, and then click Microsoft Excel.
7. Quit Excel.
8. Start Windows Explorer, and then double-click to open any Excel workbook (.xls).


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