Hi William McGlaughon , 

Thanks for reaching out. It seems the window size has changed unexpectedly, which can happen due to various reasons such as updates or changes in monitor configuration.

Here's a quick method to try and resolve this:

1. Click on the dialog box in the taskbar to select it.
2. Press Alt + Space Bar, then press M.
3. Use the arrow keys (◄▲▼►) to move the dialog box back onto the screen.
4. Once it's in view, press Enter or click to drop it in place.

If this doesn't work, you can also try:

• Maximizing the window by right-clicking on the taskbar icon, selecting 'Maximize'.
• Using Windows Key + Left Arrow or Right Arrow to snap the window back into view.
• If it’s Sage 300, close all modules and rename the registry key as instructed in the article for resetting window positions.

Should these steps not correct the issue, please don't hesitate to reach out to Sage support for further assistance.

Warm Regards,
Erzsi