Microsoft Outlook是一款功能丰富的电子邮件客户端，可在Windows、Android、iPhone 和Mac上使用。然而，尽管它很受欢迎，但许多用户报告了一个故障，即他们无法在Outlook中附加文件。

在本教程中，我们将解释您遇到此故障的原因，并解释如何修复Outlook，以便您可以再次 将文件附加到Outlook电子邮件。^(Outlook)

为什么我无法在Microsoft Outlook中附加文件？

在解决问题之前，您需要知道导致问题的原因。Outlook 中 电子邮件附件问题^{(email attachment issues)}的常见原因包括：

1. 附件大小超出允许的限制或Outlook客户端无法压缩大文件附件
2. 该文件已被防病毒软件标记为可疑且是恶意软件的潜在来源
3. 您在过时的浏览器上 使用Outlook.com

如何解决无法在Microsoft Outlook中^{(Microsoft Outlook)}附加文件的问题^{(Attach Files)}

由于造成此问题的原因有多种，因此解决方案也有多种。请按照以下故障排除方法进行操作，直到您可以再次将文件附加到Outlook中的电子邮件中。

1. 检查最大文件大小

Outlook的附件大小限制为 20 MB。如果您的文件大小超过此限制，您将无法附加它。因此，当您在附加文件时遇到问题时，首先要做的是检查附件大小是否太大。如果大小超出允许的限制，您将需要寻找其他方式来发送文件。

根据您的共享首选项，Outlook可能会提供发送 OneDrive 链接作为便捷的替代方案。您还可以尝试将文件压缩为Zip 文件^{(Zip File)}并尝试附加该文件。

2. 修改邮件文件格式

富文本格式是^{(Rich Text)}Outlook中电子邮件的标准格式。如果您在将文件附加到电子邮件时遇到问题，您应该将格式更改为纯文本^(Plaintext)或HTML，看看是否可以解决问题。

1. 打开Outlook并导航到“文件”^(File)选项卡。

1. 选择选项。

1. 在新对话框中，选择“邮件”^(Mail)。
2. 在“撰写消息”^{(Compose Messages)}下，选择以此格式 撰写消息^{(Compose Messages)}旁边的下拉列表。
3. 选择HTML或纯文本^(Plaintext)选项。

1. 选择确定。

3.使Outlook 退出^{(Outlook Out)}兼容模式^{(Compatibility Mode)}

如果您使用的是较旧的操作系统，Outlook会进入兼容模式以允许程序运行。不管怎样^(Regardless)，它可能会导致某些Outlook功能出现问题，例如附加文件。如果Outlook正在兼容模式^{(Compatibility Mode)}下运行，请尝试按照以下步骤将其切换回正常模式。

1. 打开“开始”菜单^{(Start Menu)}并搜索Outlook。选择打开^{(Select Open)}文件位置。

1. 右键单击Outlook.exe，然后选择“属性”。

1. 导航到“兼容性”^{(Compatibility)}选项卡，然后取消选中“以兼容模式运行^(Run)此程序”选项。

1. 选择应用。
2. 重新启动 Outlook，^{(Restart Outlook)}您现在应该可以附加文件了。

4. 将Outlook更新到最新^(Latest)版本

^(Software)Microsoft提供的软件更新不仅可以添加功能并使应用程序在您的操作系统中正常运行，还可以消除各种技术故障。如果您无法在Outlook中附加文件，请尝试按照以下步骤 将其更新到当前版本。^{(updating it to the current version)}

1. 在 Outlook 中，选择“文件”。
2. 选择 Office 帐户。
3. 选择 Microsoft 365^{(Select Microsoft 365)}和Office 更新^{(Office Updates)}。

1. 选择立即更新。

1. 重新启动 Outlook。

5. 检查互联网连接^{(Internet Connection)}并更新^(Update)浏览器^(Browser)

不稳定的互联网连接可能会导致附加文件时出现问题。在附加文件之前，请确保您拥有活跃、稳定且信号强的互联网连接。

如果您的网络出现问题， 请查看我们的互联网故障排除指南。^{(internet troubleshooting guide)}

6. 更新您的浏览器

如果您使用的是Outlook^(Outlook)的 Web 版本，请在尝试将文件附加到Outlook电子邮件之前确保您的浏览器是最新的。如果您不确定如何操作，请查看我们有关如何更新任何网络浏览器的^{(update any web browser)}指南。

7. 检查文件扩展名

如果您发送 .exe 文件，Outlook可能会将其标记为恶意软件。在尝试将其附加到电子邮件之前，请^(Make)确保您发送的文件类型符合您的预期并且来自安全来源。

如果仍然无法发送，您可以尝试将文件压缩为ZIP文件后再发送。

最后的话

当您尝试执行一些简单的操作（例如在Outlook中将文件附加到电子邮件）时，总会出现问题。幸运的是，它通常很容易修复，希望您现在能够再次 将文件附加到Outlook电子邮件中。^(Outlook)

Can’t Attach Files in Outlook? Try These 7 Fixes

Microsоft Outlook is a feature-rich email client available on Windows, Android, iPhоnе, and Mac. However, despite its popularity, many users report a glitch that means they can’t attach filеs in Outloоk.

In this tutorial, we’ll explain why you’re experiencing this glitch and explain how to fix Outlook so that you can attach files to your Outlook emails once again.

Why Can’t I Attach Files in Microsoft Outlook?

Before you can fix the problem, you need to know what is causing it. Common causes of email attachment issues in Outlook include:

1. The attachment size is beyond the allowable limit or the Outlook client fails to compress a large file attachment
2. The file has been flagged by antivirus software as suspicious and a potential source of malware
3. You’re using Outlook.com on an obsolete browser

How to Troubleshoot When You Can’t Attach Files in Microsoft Outlook

As there are multiple causes of this problem, there are also multiple solutions. Follow the following troubleshooting methods until you can once again attach files to email messages in Outlook.

1. Check the Maximum File Size

Outlook has an attachment size limit of 20 MB. If your file size exceeds this limit, you simply cannot attach it. So, when you’re having issues attaching a file, the first thing to do is check that the attachment size isn’t too big. If the size exceeds the allowable limit, you’ll need to find another way to send your file.

Depending on your sharing preferences, Outlook may offer to send a OneDrive link as a convenient alternative. You can also try compressing the file into a Zip File and try attaching that.

2. Modify The Email File Format

The Rich Text format is the standard format for email messages in Outlook. If you are having issues attaching files to email, you should change the format to Plaintext or HTML and see if that fixes the issue.

1. Open Outlook and navigate to the File tab.

1. Select Options.

1. In the new dialog box, select Mail.
2. Under Compose Messages select the drop-down next to Compose Messages in this format.
3. Select the HTML or Plaintext option.

1. Select OK.

3. Take Outlook Out of Compatibility Mode

If you’re using an older operating system, Outlook goes into compatibility mode to allow the program to run. Regardless of this, it can cause issues with some Outlook features, such as attaching files. If Outlook is running in Compatibility Mode, try switching it back to normal mode with the steps below.

1. Open the Start Menu and search for Outlook. Select Open file location.

1. Right-click Outlook.exe and choose Properties.

1. Navigate to the Compatibility tab and untick the Run this program in compatibility mode option.

1. Select Apply.
2. Restart Outlook you should now be able to attach the file.

4. Update Outlook to the Latest Version

Software updates provided by Microsoft don’t only add features and keep the app functioning with your operating system, they also remove various technical glitches. If you are unable to attach files in Outlook, try updating it to the current version with the steps below.

1. In Outlook, select File.
2. Select Office account.
3. Select Microsoft 365 and Office Updates.

1. Select Update Now.

1. Restart Outlook.

5. Check the Internet Connection and Update the Browser

An unstable internet connection can cause issues when attaching files. Make sure you have an active, stable internet connection with a strong signal before attaching files.

Check out our internet troubleshooting guide if you’re having problems with your network.

6. Update Your Browser

If you are using the web version of Outlook, make sure your browser is up to date before trying to attach files to an Outlook email. If you aren’t sure how to, check out our guide on how to update any web browser.

7. Check the File Extension

If you’re sending a .exe file, Outlook might flag it as malware. Make sure the file type you are sending is what you would expect and is from a safe source before trying to attach it to an email.

If it still won’t send, you can try compressing the file into a ZIP file before sending.

Final Words

It’s always when you’re trying to do something simple like attaching files to an email in Outlook that glitches appear. Fortunately, it’s usually easy to fix, and hopefully you’re now able to attach files to your Outlook emails once again.

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