升级到最新版本的Windows后，许多用户都遇到了OneDrive服务的问题。在尝试访问应用程序内的文件和文件夹时，用户会看到以下错误消息 - OneDrive 无法连接到 Windows^{(OneDrive cannot connect to Windows)}。如果为OneDrive启用了^(OneDrive)Files on Demand功能，也会存在同样的问题。以下是您可以解决问题的方法。

OneDrive 无法连接到 Windows

上面的错误消息后面是一个很长的描述，内容如下 -

Files On-Demand requires a connection to Windows in order to show your files without taking up space on this device. OneDrive can keep trying to connect to Windows or you can choose to download all your files. You won’t be able to use online-only files until this is fixed.

如果您看到OneDrive 无法连接到 Windows^{(OneDrive cannot connect to Windows)}消息，请尝试以下操作：

1. 打开Settings > Update和Security > Troubleshoot
2. 单击查看故障排除历史记录^{(View troubleshooting history)}链接。
3. 检查推荐的故障排除历史记录^{(Recommended troubleshooting history)}。
4. 检查Files On-Demand 疑难解答^{(Files On-Demand troubleshooter)}是否成功运行。
5. 验证按需文件^{(Files On-Demand)}仍处于启用状态。
6. 重新启动您的 PC 并查看问题是否已解决。

我们将在这里详细介绍这些方法！

文件按需疑难解答

打开Settings > Update和Security > Troubleshoot

接下来，单击“设置”^(Settings)对话框的“疑难解答^{(Troubleshoot)}”部分中的“查看历史记录^{(View History)}” 。

如果Files On-Demand Troubleshooter已尝试运行，则在Recommended^{(Recommended troubleshooter)(Recommended troubleshooter)} Troubleshooter 下，您将看到一条消息：

You may have lost access to your Files on Demand. This troubleshooter restores access or prevents the loss of access from happening in the near future.

如果是这样，请在故障排除程序完成后重新启动您的设备。

• 如果Files On-Demand疑难解答能够成功运行，您将看到一条消息已成功^{(Successfully)}运行。
• 如果无法成功运行，则会显示“无法^(Could)运行”。

您可能想要验证Files on Demand是否仍处于启用状态。

右键单击^{(Right-click)}通知区域中的 OneDrive 图标，选择设置^(Settings)并确保启用保存空间并在使用时下载文件。^{(Save space and download files as you use them)}

完成此操作后，OneDrive现在应按预期连接并运行。

如果这没有帮助，请在提升的命令提示符下执行以下命令：

reg add HKLM\System\CurrentControlSet\Services\Cldflt\instances /f /v DefaultInstance /t REG_SZ /d "CldFlt"

完成后，重新启动计算机并检查。

Fix OneDrive cannot connect to Windows error message in Windows 11/10

Followіng an upgrade to the latest version of Windows, manу users are exрeriencing issues with OneDriνe service. Upon attempting to access thе files and folders inside thе app, the users seе the following errоr message – OneDrive cannot connect to Windows. The same issue exists if the Files on Demand feature is enabled for OneDrive. Here’s what you can do to fix the problem.

OneDrive cannot connect to Windows

The above error message is followed by a long description that reads as –

Files On-Demand requires a connection to Windows in order to show your files without taking up space on this device. OneDrive can keep trying to connect to Windows or you can choose to download all your files. You won’t be able to use online-only files until this is fixed.

If you see OneDrive cannot connect to Windows message, try this:

1. Open Settings > Update and Security > Troubleshoot
2. Click the View troubleshooting history link.
3. Check Recommended troubleshooting history.
4. Check if Files On-Demand troubleshooter runs successfully.
5. Verify Files On-Demand is still enabled.
6. Restart your PC and see if the issue is resolved.

We’ll cover the methods in detail here!

Files On-Demand Troubleshooter

Open Settings > Update and Security > Troubleshoot

Next, click ‘View History’ in the Troubleshoot section of the Settings dialog.

If Files On-Demand Troubleshooter has attempted to run, then under Recommended troubleshooter, you will see a message:

You may have lost access to your Files on Demand. This troubleshooter restores access or prevents the loss of access from happening in the near future.

If so, reboot your device once the troubleshooter is finished.

• If Files On-Demand troubleshooter is able to run successfully, you will see a message Successfully ran.
• If it was not able to run successfully, it will say Could not be run.

You might want to verify that Files on Demand is still enabled.

Right-click on the OneDrive icon in the notification area, select Settings and ensure that Save space and download files as you use them is enabled.

Once this is done, OneDrive should now connect and run as expected.

If this does not help, in an elevated command prompt, execute the following command:

reg add HKLM\System\CurrentControlSet\Services\Cldflt\instances /f /v DefaultInstance /t REG_SZ /d "CldFlt"

Once done, restart your computer and check.

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