Category Archives: Web development

Internet Explorer 10 Turning Compatibility mode on (From server)

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In order to turn Compatibility mode on for Internet Explorer the server should send “X-UA-Compatible” as a header with the value IE=EmulateIE9. This will force Internet explorer to use compatibility mode if it is a version higher than 9

If we using ISS (making for instance a asp.net project) the following web.config can be used to do this.

<configuration>
  <!-- Other settings -->
  <system.webServer>
    <httpProtocol>
      <customHeaders>
        <clear />
        <add name="X-UA-Compatible" value="IE=EmulateIE9" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>
</configuration>

Mode details on the possible values for the header tag

Sometimes sending this as a header tag works, then this should be sent first in the header tag

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>
    <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE9" />

Internet Explorer 10 Turning Compatibility mode off (From server)

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In order to turn Compatibility mode off for Internet Explorer the server should send “X-UA-Compatible” as a header with the value IE=Edge. This will force Internet explorer to use the latest mode the version has (this works from IE 6 to 11 and up)

If we using ISS (making for instance a asp.net project) the following web.config can be used to do this.

<configuration>
  <!-- Other settings -->
  <system.webServer>
    <httpProtocol>
      <customHeaders>
        <clear />
        <add name="X-UA-Compatible" value="IE=Edge" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>
</configuration>

Mode details on the possible values for the header tag

Avant Browser don’t show the session restore window

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One way to disable the Session restore question (after the browser has crashed/been turned off hard) for Avant Browser is to delete the files that hold the session data.

DEL /Q "%appdata%\Avant Browser\*.opg"
DEL /Q "%appdata%\Avant Browser\reopen.dat"
DEL /Q "%appdata%\Avant Browser\pages.dat"

This can be scripted together with the launch of the browser so that batch(.bat) file could look like:

DEL /Q "%appdata%\Avant Browser\*.opg"
DEL /Q "%appdata%\Avant Browser\reopen.dat"
DEL /Q "%appdata%\Avant Browser\pages.dat"
"C:\Program Files\Avant Browser\IExplore.exe" %1

note: the %1 means to insert the first argument given to the batch file here. So if this is called “avant.bat” and you would call it with “avant.bat www.f15ijp.com” it would open this url.

Opera 8.54 don’t show the session restore window

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One way to disable the Session restore question (after the browser has crashed/been turned off hard) on Opera 8.54 is to delete the files that hold the session data.

DEL /Q "C:\Program Files\Opera\profile\sessions\autosave.win"
DEL /Q "C:\Program Files\Opera\profile\sessions\autosave.win.bak"

This can be scripted together with the launch of the browser so that batch(.bat) file could look like:

DEL /Q "C:\Program Files\Opera\profile\sessions\autosave.win"
DEL /Q "C:\Program Files\Opera\profile\sessions\autosave.win.bak"
"c:\Program Files\opera\opera.exe" %1

note: the %1 means to insert the first argument given to the batch file here. So if this is called “opera.bat” and you would call it with “opera.bat www.f15ijp.com” it would open this url.

Netscape Navigator 9.0: Don’t show the session restore popup

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Netscape Navigator 9.0 will promt the user to restore the previous session (pages that were open) if the browser crashed (or was shut down hard/incorrectly).

This can be turned off by going into “about:config” finding the key “browser.sessionstore.resume_from_crash” and setting this to false.

Update: This also applies for the SeaMonkey Browser

Windows: Don’t update Google Chrome (i.e. disable auto update)

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By default Google Chrome will update to the latest version automatically. It is however possible to disable this and instead update manually (when needed/wanted).

Note: This means you will not get security updates as threats are found and these get fixed – so this might be a bad idea to do if you don’t plan to update manually.

Open up a registry editor and check if the key “HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Update” exists, otherwise create it (the key is the tree structure in regedit).
Now enter a Key name “DisableAutoUpdateChecksCheckboxValue ” as a DWORD and give it the value “1”.
This will keep Google Chrome from auto updating.

FireFox 2.x don’t show the session restore window

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When FireFox 2.x came out it was the first version that introduced session restore if the browser crashed (or was shut down hard/incorrectly).

This can be turned off by going into “about:config” finding the key “browser.sessionstore.resume_session” and setting this to false

Also you probably want to check out the startup options under “Tools->Options->When Firefox starts”

(This can also be used to show the session restore window by setting the “browser.sessionstore.resume_session” to true)

Note: This can also be used with Flock versions 2.6.x as that is based on FireFox