When a user by mistake has clicked on the '''Block''' button during IMSMA server start-up you may unblock it in the Windows Firewall. In this example Windows 7 and the Firewall used is Windows own.
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<li> Go to the Control panel and choose '''Windows Firewall'''.</li>[[Image:Unblock.png|200px|center]]<li>In the left pane, click choose '''Allow a program or feature through Windows Firewall'''.<br>[[Image:Unblock.png|200px]]<br/li><li>Scroll down to '''Java(TM) Platform SE binary'''</li>[[Image:Unblock server2.png|500px|center]]<li>Click on the Detail button until and verify that you find have found the correct ''Java(TM) Platform SE binary'' row with ''C:\imsmang\java\bin\javaw.exe''</li><li>Click on ''Network Location Types. </li><li>Specify which types of networks IMSMA server is allowed to function on.</li><li>Click Change settingsOK.</li><li>Verify that the IMSMA server row is activated. </li><li>Unblock Test to start the IMSMA server and click OK.</li><li>If it does not work then repeat until the necessary network types are allowed. </li>
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