設(shè)置默認應用的方法包括：1. 按文件類型選擇默認應用：進入“設(shè)置> 應用> 默認應用”，點擊“按文件類型選擇默認應用”，選擇對應文件類型並更改應用；2. 按協(xié)議設(shè)置默認應用：在相同頁麵點擊“按應用協(xié)議設(shè)置默認值”，選擇如http、mailto等協(xié)議並指定應用；3. 重置所有默認設(shè)置：在默認應用設(shè)置中找到“重置”部分，點擊“重置為Microsoft推薦默認值”以恢復初始配置。

Setting your default apps in Windows 10 is a straightforward way to make sure your favorite programs open automatically when you perform certain tasks — like clicking a link, opening a PDF, or playing music. It's not just about convenience; it also helps avoid annoying pop-ups asking you to choose an app every time.

How to Set Default Apps by File Type

Windows lets you control which app opens specific file types like .pdf, .jpg, or .mp3. This is especially useful if you've installed a new browser or media player and want it to handle all related files.

• Go to Settings > Apps > Default apps
• Scroll down and click on " Choose default apps by file type "
• You'll see a long list of file extensions (like .pdf, .mp4, etc.)
• Click the current app listed next to a file type, then pick your preferred program from the list

If your desired app isn't listed, you may need to install it first or browse for it manually using the “Look for another app on this PC” option.

Setting Defaults by Protocol (Links, Mail, etc.)

Some apps handle more than just files — they also manage protocols like HTTP links, email links ( mailto: ), or maps ( geo: ). Choosing defaults here ensures that links from emails or websites open in the right place.

• In the same Default apps section, click " Set defaults by app protocol "
• You'll see a list that includes things like http , https , mailto , and others
• For each one, click the current default app and select the one you prefer

This is especially handy if you switched browsers but still get taken to Edge when clicking links in Outlook or other apps.

Reset All Defaults (When Things Get Messy)

Sometimes apps change your defaults without asking — especially after updates. If things feel out of control, resetting everything can be a fresh start.

• Still in the Default apps settings, look for the " Reset " section
• Click " Reset to Microsoft recommended defaults "
• This will clear custom choices and return to Windows' built-in defaults

You don't have to use Microsoft's picks forever — reset first, then reassign only what matters to you.

It's not complicated once you know where to look, but it's easy to forget how much smoother your day goes when the right app opens at the right time.

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