Solution: 1. Press and hold the Ctrl End key at the same time, then the mouse will jump to the cell at the bottom right of the interface; 2. Move the last cell to the last row and column of the editing table Select and delete the content; 3. Select a column with the mouse, right-click the mouse, and click "Insert" to successfully insert the column.

The operating environment of this tutorial: Windows 7 system, Microsoft Office Excel 2007 version, Dell G3 computer.
Related learning recommendations: excel tutorial
The reason why excel cannot add columns or rows: Due to incorrect operation, excel thinks that all cells in the file have data. So no more empty columns or rows can be added.
Solution:
1. Right-click to insert the column

2. When the row and When selecting the column, the system will pop up an error prompt box, click "OK" in the middle.

#3. Click the mouse to close the prompt box, and hold down the Ctrl End key at the same time. At this time, the mouse will jump to the cell at the bottom right of the interface.

4. Press and hold the Shift key on the keyboard, use the mouse to drag the lower progress bar to the front, return to the last column of the edited table, and select all After the content is deleted, all will be deleted.

#5. Press and hold the Ctrl End key on the keyboard at the same time, select and delete the last cell to the last row of the editing table.

#6. Now select a column with the mouse, right-click the mouse, and click "Insert" to successfully insert the column.

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