When you create a new web part page in SharePoint, its left navigation column becomes empty. Reason for this is that the left side navigation is defined in the Master Page using “PlaceHolderLeftNavBar” content place holder and templates for Web Part Pages shipped with SharePoint overrides this content place holder and deletes its content, thus displaying empty left navigation. The solution for this is to change the page so it will not override the menu place holder, but inherit it from the Master Page.
1. There is this tag which needs to be deleted or commented (this one hides the left nav)
2. Delete only this tag as this is what overrides the default nav coming from the master page.
3. Leave this tag as it is, if this is deleted(as said in other posts) it leaves a blank row on top the left nav which is not what you would want.
4. Save the file.
You will get a warning saying you are about to customize the page. Just go ahead and open that web part again. It should have that good left navigation.
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About Sagar Pardeshi
Solutions. I am currently working on Sharepoint 2010, MOSS 2007, Sharepoint 2013,Sharepoint 2013 App Dev, C#, ASP.NET, and SQL Server 2008.
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