Gopoi's questions

I deactivated data deduplication on one of my drives because it doesn't work well with the backup system.
I then started an unoptimization job in Administrative PowerShell. After that I realized I didn't put the priority up high so the job runs faster since there is no load on that server at the moment. So I tried stopping the job and got this:

PS C:\Windows\system32> Stop-DedupJob  
Stop-DedupJob : The term 'Stop-DedupJob' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.  
Stop-DedupJob  
+ ~~~~~~~~~~~~~  
+ CategoryInfo          : ObjectNotFound: (Stop-DedupJob:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

I was able to do Get_DedupJob at first but now I get the same error as if the cmdlet were removed.... But an Unoptimization Job is still running... How can I use the cmdlet without re-enabling the deduplication on the volume?

I am trying to follow this procedure to add a registry key to all my domains computer. The thing is that I don't see anything under:

• Computer Configuration
  • Preferences
    • Windows Settings

It does that no matter what policy I choose. I am using Windows Server 2012 R2.

I am using Windows Server 2012 R2, and after it reboots I absolutely need to connect to it in local or else it will not allow any connections (RDP, shared folders).

What is the option (local or group policy) to allow connection without needing one to connect to it in person.

I accidently create a "\" file into my linux how to revert it. I tried rm \ (as it's the escaping character it didn't work), rm '\' and rm \\ nothing worked.

I want to place a VPN beetween home and school because I do not trust the network down there.

If I configure the VPN server with NAT-T (nat-traversal) and configure my router to foward UDP 20 -> UDP 500 && UDP 21 -> 4500 (I also configure the client to use UDP 20 for IKE and 21 for NAT-t) will the configuration works?

And is IKE mandatory in order to ipsec to function?