<p><a href="http://wincert.net/wp-content/uploads/2015/01/windows-8.jpg"><img class="alignnone size-full wp-image-548" src="http://wincert.net/wp-content/uploads/2015/01/windows-8.jpg" alt="online,data retrieval,shut,signature,windows 8 keyboard shortcuts" width="720" height="340" /></a></p>
<p>If you have tried to install an application on Windows 8 machine that requires an older version of .NET framework (older than v4.5) and your PC is located in Corporate environment you might receive the following error:</p>
<p>Windows couldn&#8217;t complete the requested changes.</p>
<p>Windows couldn&#8217;t connect to the Internet to download necessary files. Make sure that you&#8217;re connected to the Internet, and click &#8220;Retry&#8221; to try again.</p>
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<p><strong>Error code: 0x800F09606</strong></p>
<p><img class=" size-full wp-image-371" src="http://wincert.net/wp-content/uploads/2012/08/net framework 3.5 installation error.PNG" alt="" width="586" height="474" border="0" /></p>
<p>I have discovered that in my case the problem was in WSUS updates. I have used &#8216;<strong>Turn Windows features on or off</strong>&#8216; to install .NET Framework 3.5 which includes .NET 2.0 and 3.0 versions that was required to install mRemoteNG application.</p>
<p>It looks like the system tried to download files from the WSUS and since the files were not available it resulted with the error above.</p>
<p>To fix this I have temporarily disabled WSUS updates using Windows Registry.</p>
<p>Hit <strong>Winkey + R</strong> and type <strong>REGEDIT</strong>. Click Enter.</p>
<p>In registry editor navigate to the following key:</p>
<p><strong>HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU</strong></p>
<p>In the right pane double click on the <strong>UseWUServer</strong> key and change its value to <strong>0</strong>.</p>
<p>Close the registry editor and restart your system.</p>
<p>You should now be able to install .NET Framework 3.5.<strong><br />
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