iTunes 是在 iOS 设备上下载、欣赏和管理媒体文件的最方便、最简单的方式。由于我们定期使用笔记本电脑或台式机，因此在它们上保留/保存这些媒体文件夹很方便。尝试将 iPhone 连接到Windows计算机上的 iTunes 软件时，您可能会遇到iTunes 无法连接到 iPhone，因为设备返回了无效响应(iTunes is unable to connect to iPhone because the device returned an invalid response)错误。因此，您将无法将 iPhone 连接到 iTunes。继续阅读以了解如何修复由于从设备错误收到的无效响应，iTunes 无法连接到 iPhone。
如何修复 iTunes 无法连接到 iPhone 问题
要使用 iTunes，您必须在您的设备上下载该应用程序。由于此错误的最可能原因是不兼容问题，因此 iTunes 应用程序版本应与您设备上的 iOS 版本兼容。下面列出了修复 iTunes 收到的无效响应的各种方法。
方法一：基本故障排除
当您收到错误消息时：iTunes 无法连接到 iPhone 或 iPad，因为收到用户的错误响应，这可能是由于iTunes 与您的 iPhone 或 iPad 之间的USB链接不正确。(USB)由于有缺陷的电缆/端口或系统错误，连接可能会受到阻碍。让我们看一些基本的故障排除修复：
1.重新启动(Restart) 两个设备(both devices)，即您的 iPhone 和您的桌面。小故障通常会通过简单的重新启动而消失。
2. 确保您的USB 端口(USB port)正常工作。连接到不同的端口并检查。
3. 确保USB 数据线(USB cable)没有损坏或有缺陷。使用不同的USB数据线连接 iPhone 并检查设备是否被识别。
4.解锁(Unlock)您的 iOS 设备，因为锁定的 iPhone/iPad 可能会导致连接问题。
3.完全关闭iTunes(Close iTunes)，然后重新启动。
5.卸载干扰上述连接的第三方应用程序。(Uninstall third-party applications)
6. 在极少数情况下，问题是由 iPhone 网络设置触发的。要解决此问题，请将网络设置重置为：
(i) 转到设置(Settings)>常规(General)>重置(Reset)，如图所示。
(ii) 在这里，点击重置网络设置(Reset Network Settings)。
方法 2：更新 iTunes
如前所述，主要关注的是版本兼容性。因此(Hence)，建议升级硬件和所有涉及的应用程序。
因此，让我们首先将 iTunes 应用程序更新到最新版本。
在 Windows 系统上：(On Windows systems:)
1.首先，通过搜索启动Apple Software Update ，如图所示。(Update )
2. 点击以管理员身份运行(Run as administrator)，以管理员权限打开。
3. 所有来自Apple的最新可用更新都将在此处显示。
4. 单击安装(Install )以安装可用的更新（如果有）。
在 Mac 电脑上：(On Mac computer:)
1. 启动iTunes。
2. 单击位于屏幕顶部的iTunes > Check for Updates 参考给定的图片。
3.如果有新版本可用，请单击安装。( Install)
另请阅读：(Also Read:) 修复 Windows 10 无法识别 iPhone(Fix Windows 10 Not Recognizing iPhone)
方法 3：重新安装 iTunes
如果更新 iTunes 无法解决问题，您可以尝试卸载并重新安装 iTunes 应用程序。
下面列出了它的说明：
在 Windows 系统上：(On Windows systems:)
1.通过在Windows搜索栏中搜索来启动应用和功能。(Apps & Features)
2. 在程序和功能(Programs & Features)窗口中，找到iTunes。
3. 右键单击它，然后单击卸载(Uninstall )将其从您的计算机中删除。
4. 重新启动您的系统。
5. 现在，从这里下载 iTunes 应用程序(download the iTunes app )并重新安装。
在 Mac 电脑上：(On Mac computer:)
1. 点击实用工具中的(Utilities)终端(Terminal )，如下图所示。
2. 键入cd /Applications/并按Enter。
3. 接下来，输入sudo rm -rf iTunes.app/并按Enter键。
4. 现在，出现提示时输入管理员(Admin) 密码(password) 。
5. 对于您的 MacPC，请单击此处下载 iTunes。(click here to download iTunes.)
检查 iTunes 是否因为收到无效响应而无法连接到 iPhone。如果没有，请尝试下一个修复。
另请阅读：(Also Read:) 如何将播放列表复制到 iPhone、iPad 或 iPod(How to Copy Playlists to iPhone, iPad, or iPod)
方法 4：更新 iPhone
由于最新版本的 iTunes 将仅与特定的 iOS 兼容，将您的 iPhone 升级到最新的 iOS 版本应该可以解决这个问题。这样做的方法如下：
1.解锁(Unlock)你的 iPhone
2. 进入设备设置(Settings)
3. 点击常规(General)，如图所示。
4. 点击软件更新(Software update)，如下图。
5. 如果您看到您的设备有更新，请点击下载并安装(Download and Install )以升级到最新的 iOS 版本。
6. 出现提示时输入您的密码(passcode) 。
7. 最后，点击同意。(Agree.)
将您的 iPhone 重新连接到您的计算机，并验证“收到的无效响应(Invalid Response Received)”错误是否已得到纠正。
方法 5：删除 Apple Lockdown 文件夹(Delete Apple Lockdown Folder)
注意：(Note:) 以管理员身份(Administrator)登录(Log)以删除Apple Lockdown文件夹。
On Windows XP/7/8/10 systems:
1.在Windows 搜索(Windows search)框中键入%ProgramData%Enter。
2. 双击Apple 文件夹(Apple Folder)将其打开。
3. 找到并删除Lockdown(Delete)文件夹。( Lockdown folder.)
注意：(Note:)不必删除锁定文件夹本身，而是删除其中存储的文件。
在 Mac 电脑上：(On Mac computer:)
1. 点击Go，然后点击Go to Folder from Finder，如图所示。
2. 输入/var/db/lockdown并按Enter。
3.在这里，点击查看为图标(View as Icons)查看所有文件
4. 全选并删除(Delete)。
另请阅读：(Also Read: )如何修复 iPhone 冻结或锁定(How to Fix iPhone Frozen or Locked Up)
方法 6：检查日期(Check Date)和时间设置(Time Settings)
这一点至关重要，因为日期和时间设置不正确会导致计算机或您的设备不同步。这将导致 iTunes 从设备问题收到无效响应。您可以在设备上设置正确的日期和时间，如下所述：
On iPhone/iPad:
1. 打开设置(Settings)应用程序。
2. 如图所示，点击General。
3. 点击日期和时间(Date & Time)。
4. 开启自动设置(Set Automatically)。
在 Mac 电脑上：(On Mac computer:)
1. 单击Apple Menu > 系统偏好设置。(System Preferences.)
2. 单击日期和时间(Date & Time)，如图所示。
3. 单击自动设置日期和时间(Set date and time automatically)选项。
注意：(Note:)在选择上述选项之前选择时区。(Time Zone)
在 Windows 系统上：(On Windows systems:)
您可以在屏幕右下角查看日期和时间。要改变它，
1. 右键单击任务栏中显示的日期和时间。(Date and Time)
2. 从列表中选择Adjust date/time 选项。
3. 单击更改(Change)以设置正确的日期和时间。
4.打开自动设置时间和自动(Set time automatically)设置时区(Set time zone automatically)的切换开关以自动同步。
方法 7：联系 Apple 支持
如果您仍然无法修复无法修复Invalid Response Received iTunes 问题，您需要联系Apple 支持团队(Apple Support Team )或访问最近的Apple Care。
受到推崇的：(Recommended:)
我们希望本文能帮助您解决从设备问题收到的 iTunes 无效响应。(iTunes invalid response received from the device problem.)如果您有任何疑问或建议，请将其留在下面的评论部分。
Fix Invalid Response Received iTunes
іTunes is the most convеnient аnd the simplest way to download, enjoу, and manage media files on your iОS devices. Since we use laptops or deѕktops on a regular basis, it is convenient to keep/save these media folders on them. When attempting to connect your iPhone to the iTunes sоftware on your Windows computеr, you might еncounter an iTunes is unable to connect to iPhone because the device returned an invalid response error. As a result, you will not be able to connect your iPhone to iTunes. Continue reading to learn how to fix iTunes could not connect to the iPhone because of an invalid response received from the device error.
How to fix iTunes could not connect to the iPhone issue
To use iTunes, you must have the app downloaded on your device. Since the most probable cause of this error is an incompatibility issue, the iTunes app version should be compatible with the iOS version on your device. Listed below are the various methods to fix invalid response received by iTunes.
Method 1: Basic Troubleshooting
When you get the error: iTunes could not connect to the iPhone or iPad because incorrect response received from the user, it might be due to an improper USB link between iTunes and your iPhone or iPad. The connection may get hampered due to defective cable/port or system errors. Let us look at some basic troubleshooting fixes:
1. Restart both devices viz your iPhone and your desktop. Minor glitches usually disappear by simple rebooting.
2. Make sure that your USB port is operational. Connect to a different port and check.
3. Ensure the USB cable isn’t damaged or defective. Connect the iPhone using a different USB cable and check if the device is recognized.
4. Unlock your iOS device as a locked iPhone/iPad may cause connection issues.
3. Close iTunes completely and then, restart it.
5. Uninstall third-party applications which are interfering with the said connection.
6. In rare cases, the issue is triggered by iPhone network settings. To resolve this, reset network settings as:
(i) Go to Settings > General > Reset, as shown.
(ii) Here, tap Reset Network Settings.
Method 2: Update iTunes
As informed earlier, the major concern is version compatibility. Hence, it is advisable to upgrade the hardware and all applications involved.
So, let’s begin by updating the iTunes app to the latest version.
On Windows systems:
1. First, launch Apple Software Update by searching for it, as illustrated.
2. Click Run as administrator, to open it with administrative privileges.
3. All newly available updates from Apple will be visible here.
4. Click on Install to install the available updates, if any.
On Mac computer:
1. Launch iTunes.
2. Click on iTunes > Check for Updates located at the top of the screen. Refer given pic.
3. Click Install if a new version is available.
Also Read: Fix Windows 10 Not Recognizing iPhone
Method 3: Reinstall iTunes
If updating iTunes did not resolve the issue, you could try uninstalling and reinstalling the iTunes app instead.
The instructions for it are listed below:
On Windows systems:
1. Launch Apps & Features by searching for it in the Windows search bar.
2. In the Programs & Features window, find iTunes.
3. Right-click on it and then click Uninstall to delete it from your computer.
4. Restart your system.
5. Now, download the iTunes app from here and install it again.
On Mac computer:
1. Click Terminal from Utilities, as shown below.
2. Type cd /Applications/ and hit Enter.
3. Next, type sudo rm -rf iTunes.app/ and press the Enter key.
4. Now, type Admin password when prompted.
5. For your MacPC, click here to download iTunes.
Check if iTunes could not connect to the iPhone because an invalid response received is resolved. If not, try the next fix.
Also Read: How to Copy Playlists to iPhone, iPad, or iPod
Method 4: Update iPhone
Since the most recent version of iTunes will be compatible only with specific iOS, upgrading your iPhone to the latest iOS version should resolve this problem. Here’s how to do so:
1. Unlock your iPhone
2. Go to device Settings
3. Tap on General, as shown.
4. Tap on the Software update, as shown below.
5. If you see an update for your device, tap on Download and Install to upgrade to the latest iOS version.
6. Type in your passcode when prompted.
7. Lastly, tap on Agree.
Reconnect your iPhone to your computer and verify that the Invalid Response Received error has been rectified.
Method 5: Delete Apple Lockdown Folder
Note: Log in as the Administrator to remove the Apple Lockdown folder.
On Windows XP/7/8/10 systems:
1. Type %ProgramData% in the Windows search box and hit Enter.
2. Double-click on the Apple Folder to open it.
3. Locate and Delete the Lockdown folder.
Note: It is not necessary to remove the lockdown folder itself but the files stored in it.
On Mac computer:
1. Click on Go and then Go to Folder from Finder, as depicted.
2. Type in /var/db/lockdown and hit Enter.
3. Here, click on View as Icons to view all the files
4. Select all and Delete them.
Also Read: How to Fix iPhone Frozen or Locked Up
Method 6: Check Date & Time Settings
This is crucial because an incorrect setting of date and time will throw the computer or your device out of sync. This will result in the iTunes invalid response received from the device issue. You can set the correct date & time on your device as explained below:
On iPhone/iPad:
1. Open the Settings app.
2. Tap on General, as depicted.
3. Tap on Date & Time.
4. Toggle ON Set Automatically.
On Mac computer:
1. Click Apple Menu > System Preferences.
2. Click Date & Time, as depicted.
3. Click on the Set date and time automatically option.
Note: Select Time Zone before choosing the said option.
On Windows systems:
You can check the date and time on the bottom right corner of the screen. To change it,
1. Right-click on Date and Time displayed in the taskbar.
2. Select Adjust date/time option from the list.
3. Click on Change to set the correct date and time.
4. Turn ON the toggle for Set time automatically and Set time zone automatically for automatic syncing hereon.
Method 7: Contact Apple Support
If you are still not able to fix unable to fix Invalid Response Received iTunes issue, you need to contact Apple Support Team or visit the nearest Apple Care.
Recommended:
We hope this article assisted you in resolving the iTunes invalid response received from the device problem. If you have any queries or suggestions, leave them in the comment section below.
