Font size keeps changing in Outlook desktop app

If you are experiencing the issue of font size changing in your Outlook desktop app, you are not alone. This can be a frustrating problem, especially if you are trying to compose an important email or message. However, there are a few things you can do to fix this issue.

Here are some possible solutions:

1. Check your default font settings: Sometimes, the font size may change if you have accidentally changed the default font settings. To check this, go to File > Options > Mail > Stationery and Fonts. Here, you can select the font and font size you want to use as your default.

2. Disable automatic font resizing: Outlook has a feature that automatically resizes the font based on the size of the window. This can be useful, but it can also cause the font size to change unexpectedly. To disable this feature, go to File > Options > Mail > Message format. Under “Compose messages”, uncheck the box that says “Automatically adjust font size”.

3. Use the zoom feature: If the font size is too small or too large, you can use the zoom feature to adjust it. Simply go to the “Zoom” section in the “Message” tab and select the zoom percentage you want.

4. Update your Outlook app: Sometimes, font size issues can be caused by outdated software. Make sure you have the latest version of Outlook installed on your computer.

5. Contact Microsoft support: If none of the above solutions work, you may need to contact Microsoft support for further assistance.

In conclusion, font size changing in Outlook desktop app can be a frustrating issue, but there are several ways to fix it. By checking your default font settings, disabling automatic font resizing, using the zoom feature, updating your app, or contacting Microsoft support, you can ensure that your font size stays consistent and readable.


In conclusion, I hope that the solutions provided will help you resolve the font size changing issue in your Outlook desktop app. Remember to check your default font settings, disable automatic font resizing, use the zoom feature, update your app, or contact Microsoft support if needed. With these steps, you can ensure that your emails and messages are composed with the font size you prefer.

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