Exchange 2013 upgrade for exchange 2007

HI
I am upgrading our servers and I'm in the process of installing Exchange 2013, I have got to the stage of creating name spaces and virtual directories.
My problem is when I Input the commands with the exchange management shell I get the error message: Starting a command on a remote server failed  ....... Access denied?
dances1960Asked:
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FOXActive Directory/Exchange EngineerCommented:
Follow this guide - your syntax may be off.  

http://www.howtogeek.com/117192/how-to-run-powershell-commands-on-remote-computers/

remember to start powershell with "run as administrator"
David McIntoshCommented:
agreed with Foxluv, make sure that any executable or powershell instance is "run as administrator".
Kim HartCommented:
User another admin account to see whether this issue persists.

Refer to the below given links that might helps you to troubleshoot this issue:

Exchange 2013: Installation and Upgrade: http://msexchangeguru.com/2014/03/02/e2013sp1-installationupgrade/

Using PowerShell with Exchange 2013 (Exchange Management Shell): https://technet.microsoft.com/en-us/library/bb123778%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396

Connect Remote Exchange Management Shell to an Exchange Server: https://technet.microsoft.com/en-us/library/dd297932%28v=exchg.141%29.aspx

Step-by-Step Exchange 2007 to 2013 Migration: http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx

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dances1960Author Commented:
Thank you all,  it now works, going through testing now.
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