Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

如果遇到特定文件类型的错误，则可能是编解码器缺失或过时。 若要解决此问题，请执行以下操作： 检查文件属性： 确保电脑上有正确的编解码器来播放媒体文件。 若要检查文件格式和编解码器信息，请右键单击媒体文件，选择“属性”，然后转到“详细信息”选项卡。

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Select Notifications to expand it, and turn notifications, banners, and sounds on or off for some or all notification senders.

Use the OneDrive mobile app to backup your phone's camera roll to Microsoft OneDrive. Note that it does not sync photos - it's a one-time upload. This means that once OneDrive has your camera roll, you can delete photos and videos from your device, freeing up valuable space, and the copies in OneDrive won't be affected.

Tip: If you encounter a problem on your Windows device, pressing the Windows logo key + F takes a screenshot, then opens the Feedback Hub app and automatically uploads the screenshot to the Feedback tab. Follow the on-screen instructions to detail the problem you've encountered.

If OneDrive camera backup isn’t working. If automatic camera backup isn’t working, open the OneDrive app. Backups will only happen if the app is running, so swiping the app up to close it will prevent automatic backups.

Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

Note In addition to the DefaultSecureProtocols registry subkey, the Easy fix also adds the SecureProtocols at the following location to help enable TLS 1.1 and 1.2 for Internet Explorer.. The SecureProtocols registry entry that has value 0xA80 for enabling TLS 1.1 and 1.2 will be added in the following paths: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

OneDrive for Business provides one place to store, share and sync your work or school files.