Manually updating microsoft security essentials

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I recently restored my computer, and I don't remember how to set up the MSE updates automatically, and how to use the task scheduler.

So can anyone tell me how to perform a Microsoft security essentials update manually?

Microsoft security researchers analyze suspicious files to determine if they are threats, unwanted applications, or normal files.

So when I try to manually update it I get the following error message: Virus and spyware definitions update failed Security Essentials could not check for virus and spyware definition updates due to an internet or network connectivity issue.

Click Help for more information about this problem Error code: 0x80240022 Error descripting: Security Essentials couldn't download the definition updates.

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