Windows Sidebar Weather Gadgets

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Go to “C:Program FilesWindows Sidebar”
Take ownership of this folder, and grant permission for your Groups or Accounts to have Read+Write
Rename wlsrvc.dll to wlsrvc.dll.old
and then replace it with this one.
restart the sidebar application, the sidebar not the gadgets

the gadget work again.

Earlier I uninstall the Weather gadget comes with the windows installation and you can use the following methods to get it back.

Control PanelAppearance and Personalization