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Suddenly, early morning when I accessed our on-premise SharePoint site, I unable to access the site pages or every list listview pages. I checked into ULS Viewer and found the following issue.

Application error when access /sandbox/Lists/Master Process/AllItems.aspx, Error=Unable to cast object of type 'Microsoft.SharePoint.WebControls.SPLinkButton' to type 'Microsoft.SharePoint.WebControls.SPPinnedSiteTile'. at T_SPPinnedSiteTile_TileColor_27.SetProperty(Object , Object ) at System.Web.Util.FastPropertyAccessor.SetProperty(Object target, String propName, Object val, Boolean inDesigner) at System.Web.UI.PropertyMapper.SetMappedPropertyValue(Object obj, String mappedName, Object value, Boolean inDesigner) at System.Web.UI.ControlBuilder.InitBoundProperty(Object obj, BoundPropertyEntry entry, DataBindingCollection& dataBindings, IAttributeAccessor& attributeAccessor)

I restart IIS serve with help of this article and everything work back to normal.

I would like to know what is root cause for occur this issue? Do you have any idea about it?

  • I have the same issue. Did you find the reason? – Raf May 30 '18 at 5:38

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