Dlo 7.5 installation

Hi,

We have the following.

1. OS - Windows 2008 R2

2. DLO 7.5 With SP1(64bit).

Is there any best practice for this installation.

I have tried to install the DLO 7.5 with SP1 but giving the below error.

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Service Pack 1 or greater is required when installing on Windows 2008 R2

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The installation was finished...

Thanks.