SDK Manager.exe doesn't work

Question

When I clicked SDK Manager on Program Files or run it in cmd, nothing happened. I did:

1. Installed latest JDK
2. Installed latest Android SDK<

Answer 1

My issue was the following error on windows 7:

C:\dev\Android\android-sdk-windows\tools>android
[INFO] Starting Android SDK and AVD Manager
No command line parameters provided, launching UI.
See 'android --help' for operations from the command line.
Exception in thread "main" java.lang.UnsatisfiedLinkError: no swt-win32-3550 or
swt-win32 in swt.library.path, java.library.path or the jar file
        at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
        at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
        at org.eclipse.swt.internal.C.(Unknown Source)
        at org.eclipse.swt.widgets.Display.(Unknown Source)
        at com.android.sdkmanager.Main.showMainWindow(Main.java:292)
        at com.android.sdkmanager.Main.doAction(Main.java:276)
        at com.android.sdkmanager.Main.run(Main.java:99)
    at com.android.sdkmanager.Main.main(Main.java:88)

The solution was to disable McAfee 8.8. Apparently some recent update is now blocking my Android environment.