Right click on an XSD file, choose “Open with…” and select the appropriate option – then click on “Set as Default” before you actually open it.
Source: Stop Visual Studio 2010 opening XSDs in design mode – Stack Overflow
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Right click on an XSD file, choose “Open with…” and select the appropriate option – then click on “Set as Default” before you actually open it.
Source: Stop Visual Studio 2010 opening XSDs in design mode – Stack Overflow