IT technical memo of networking

Avoid the Error " Windows can't open this file..." and checkout the permanent of checking

When you open a file of Windows 7 in unregistered extension, or to download the corresponding software from the Web, there is a need to choose whether to open in the software that is installed on the PC. But this selection, but in many cases has become a extra time and effort for the engineers. And various log files log.001, log.002, and the like, or have been created in ascending order, without the extension. This log file is often you want to check and open package in a text editor. This is, to change to "Select the program from a list" from the "Find the right to use the Web services program", "is to open this kind of file, always use the selected program," uncheck the select a notepad, extra time-consuming analysis speed Once you have done that the fall.

The actual operation, double-click on such a file.

(Sorry inf JP's figure)

Then, by default, such a screen is displayed.

Since this step is troublesome set to skip this screen.

In addition, Windows 10 this screen is not displayed, made in the application selection screen.

Back up the previous configuration change

In this setting, edit the registry. Since Windows 7 Incorrect registry settings may not be able to operate correctly, please refer to the street backup of the following procedures.

※ The setting of this article is the operating result in my environment. Configuration changes you wish carried out in the responsibility of each.

Registry settings added to skip the screen

In order to skip the screen of the Windows can't open this file. Find the correct program by using the Web service, to edit the registry.

To run regedit in the Win + R.

Move as follows in the tree on the left pane.

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explorer

To change the name of the file that was created here in the NoInternetOpenWith. F2 or can also be edited in the right click> Rename.

Then, double-click or right-click> Modify in the value of data: 1.

The first screen is not out in this.

If does not work

Depending on the environment, there is a case in which the path is different.

Try a setting of another route.

HKEY_CURRENT_USER \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explorer

Policies also have unnecessary case.

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explorer

There is also a pattern to the value to the file name in the InternetOpenWith and 0. (I did not work)

In addition remove the check

Windows can not open this file because is of the screen is no longer out, followed by "to open this kind of file, always use the selected program" uncheck . Specific extensions such as xxx.log may once put a check, but to put string extensions such as xxx.123 in text editor, avoid personal Thailand.

As is also the here MS community, you can disable the always used settings with the following settings.

In the Registry Editor, choise the key [HKEY_CLASSES_ROOT\Unknown\shell\opendlg\command], double-click the "(default)" and add the "%2" at the end of the value.

With this setting, check is disabled and out of, the same screen comes to appear each time you open.

How to remove the extension registration

If you've registered the extension wrong, it can be released in the following procedure.


By the above configuration changes, " Windows can't open this file. To open this file, Windowns needs to know what program you want to use to open it" "Find the right to use the Web service program" and "When you open a this kind of file, always use the selected program" eliminates the check of time and effort of, comfortably use the Windows 7 be able to.

This Blog is English Version of my JP's.

Sorry if my English sentences are incorrect.