The 'Date modified' column in Programs and Features window is empty
Solution 1:
Right-click the row with the headings on it, select "More...", and then deselect "Date Modified". Right-click the row again, select "More..." and select "Installed On"
Right-click the row with the headings on it, select "More...", and then deselect "Date Modified". Right-click the row again, select "More..." and select "Installed On"