The Save As dialog box appears two times when you try to save a file in Word
When you select Save or Save As to save a file in Microsoft Word, the Save As dialog box appears two times.
This problem occurs because the Normal.dotm template is corrupted.
To resolve this problem, create a new Normal.dotm file by changing the name of the old file. To do this, follow these steps:
Start Windows Explorer, type %appdata%\Microsoft\Templates in the address bar, and then select Enter.
Right-click Normal.dotm, and then select Rename.
Change the file name to Normal.old.dotm.
Restart Word. A Normal.dotm template is automatically generated.
Try to save a file to check whether the problem is resolved.