Windows 10/11Windows Update或Mail应用程序时，您是否一直遇到“错误代码：0x80070490” ？这是一个您可以很容易解决的错误（尽管您可能会遇到需要高级故障排除的情况）。
按照以下说明操作，修复Windows 更新(Windows Update)或邮件(Mail)应用程序中的“错误代码：0x80070490”。如果两者都出现错误，请按出现的顺序应用修复程序。
(Fix Error Code 0x80070490)修复Windows 更新(Windows Update)中的错误代码 0x80070490
Windows Update中的“错误(Error)代码：0x80070490”通常是与反恶意软件程序冲突、Windows Update缓存损坏或操作系统损坏的结果。以下修复程序应该可以解决Windows 更新(Windows Update)错误。
运行 Windows 更新疑难解答
微软(Microsoft)知道Windows 更新(Windows Update)容易出现许多问题，这就是为什么 Windows 10/11 包含一个内置的疑难解答程序来帮助处理这些问题。
1. 打开开始(Start )菜单（或按Windows键）并选择设置(Settings)。
2. 选择系统(System )>疑难解答(Troubleshoot )(Windows 11) 或更新和安全(Update & Security)>疑难解答(Troubleshoot )(Windows 10)。
3. 选择其他疑难解答(Other troubleshooters)(Windows 11) 或其他疑难解答(Additional troubleshooters )(Windows 10)。
3. 选择Windows 更新(Windows Update)(Windows 11)旁边的运行或(Run )Windows 更新(Windows Update)>运行故障排除(Run the troubleshooter)程序 (Windows 10)。
加载Windows 更新(Windows Update)疑难解答后，请按照屏幕上的所有说明修复任何检测到的问题。
重启你的电脑
如果Windows 更新(Windows Update)疑难解答无法解决“错误代码：0x80070490”，请尝试重新启动您的计算机——这个简单的操作通常可以解决大多数与系统相关的异常。回到桌面后，运行Windows 更新(Windows Update)并查看错误是否再次出现。
暂时暂停防病毒实用程序
第三方防病毒软件经常与Windows Update产生冲突。如果您的计算机上安装了一个，请尝试暂时禁用其带电防护罩并检查是否有所不同。
您通常可以通过其系统托盘图标暂停防病毒实用程序。如果没有，请检查其配置窗格；您可能需要参考其在线文档以获取具体说明。
配置 Windows 更新服务
您必须确认与Windows Update相关的每个系统服务都运行正常。
1. 按Windows + R，键入services.msc，然后选择确定(OK )以打开服务小程序。
2. 右键单击 Windows 更新(Windows Update)、后台智能传输(Background Intelligent Transfe)和加密服务( Cryptographic Services)，然后选择属性(Properties)。
3. 验证所有三个服务中的启动类型(Startup type )都设置为运行(Running )且服务状态(Service status)为运行(Running )（如果不是，请选择启动(Start)）。
删除 Windows 更新文件夹
损坏的Windows 更新缓存(corrupt Windows Update cache)是导致“错误(Error)代码 0x80070490”的另一个原因。尝试(Try)删除存储缓存文件的文件夹。该过程涉及使用提升的命令提示符(Command Prompt)控制台 运行一系列命令。
1. 打开开始(Start )菜单，输入cmd，然后选择以管理员身份运行，(Run as administrator )以管理员权限打开命令提示符(Command Prompt)。
2. 粘贴以下命令并按Enter以禁用Windows 更新(Windows Update)服务：
净停止 wuauserv(net stop wuauserv)
3. 运行以下命令删除Software Distribution文件夹：
rmdir %systemroot%\SoftwareDistribution /s
4. 执行以下命令重启Windows Update服务：
净启动 wuauserv(net start wuauserv)
运行 SFC 和 DISM 扫描
您可能还想运行 SFC 或 DISM 扫描(run an SFC or a DISM scan)。这两种命令行工具都可以通过修复丢失或损坏的系统文件来修复Windows错误。(Windows)
1. 右键单击开始(Start )按钮并选择Windows Terminal (Admin)或Windows PowerShell (Admin)。
2. 运行以下命令启动 SFC 扫描。
sfc /scannow
3. SFC扫描完成后，运行以下命令调用DISM工具：
DISM.exe /Online /Cleanup-image /Restorehealth
如果上述DISM命令失败，请插入Windows 10/11 installation USB或DVD并运行以下命令，将D替换为外部媒体的驱动器号：
DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:D:\RepairSource\Windows /LimitAccess
使用其他方式更新 Windows
更新Windows是另一种修复已知问题Windows Update的方法。但是，由于您无法正常更新操作系统，替代方法是通过Microsoft Update Catalog手动下载和安装更新文件。
1. 检查Windows 10(Windows Update History for Windows 10)或Windows 11的 Windows 更新历史记录并记下最新的KB ID。
2. 访问Microsoft 更新目录(Microsoft Update Catalog)并搜索并下载更新。确保选择与 PC 上的(Make)Windows体系结构（32 位或 64 位）匹配的文件 。
3. 运行下载的更新文件进行安装。
(Fix Error Code 0x80070490)修复邮件应用程序(Mail App)中的错误代码 0x80070490
Windows 10/11Mail应用程序中的“错误(Error)代码：0x80070490”通常在添加新电子邮件帐户（例如，Gmail或Outlook）时出现。以下建议和修复将解决邮件(Mail)错误。
运行 Windows 应用商店应用疑难解答(Run Windows Store Apps Troubleshooter)
Windows 10/11 提供对旨在解决Microsoft Store(Microsoft Store)应用程序（包括邮件(Mail)）问题的内置疑难解答程序的访问权限。
在“其他疑难解答(Other troubleshooters )”或“其他疑难解答(Additional troubleshooters)”下，选择Windows 应用商店应用( Windows Store Apps)(Windows 11)旁边的运行或(Run )Windows 应用商店应用( Windows Store Apps)>运行疑难解答(Run the troubleshooter)(Windows 10) 以将其打开。
更新邮件应用
以下修复涉及更新邮件(Mail)应用程序。这应该解决“错误(Error)代码：0x80070490”背后的任何已知问题。
1. 打开微软商店( Microsoft Store)。
2. 选择屏幕左下角的库。(Library )
3. 选择获取更新(Get updates)以更新您计算机上的邮件(Mail)和其他应用商店(Store)应用程序。
更新 Windows 10/11
如果您在使用Windows 更新(Windows Update)时没有遇到相同的错误（如果是，请使用上述解决方法），请尝试接下来应用任何挂起的操作系统更新。
1. 打开设置(Settings )应用程序并选择Windows 更新(Windows Updates)。
2. 选择检查更新(Check for updates)。
3. 选择下载并安装(Download and install )以应用最新的 Windows 更新。
检查电子邮件隐私设置
错误配置的电子邮件隐私设置也可能导致 0x80070490邮件(Mail)应用程序错误。确认一切设置是否正确。
1. 打开设置(Settings )应用程序。
2. 选择隐私和安全(Privacy & security)>电子邮件(Email)(Windows 11) 或隐私(Privacy )>电子邮件(Email )(Windows 10)。
3. 打开电子邮件访问(Email access)、让应用访问您的电子邮件(Let apps access your email)、邮件和日历( Mail and Calendar)旁边的开关。
在日历应用程序中设置帐户
修复“错误代码：0x80070490”的另一种方法是首先在日历(Calendar)应用程序中设置您的电子邮件帐户。
1. 打开日历(Calendar )应用程序。
2. 选择设置(Settings )图标并选择管理帐户(Manage account)。
3. 选择添加帐户(Add account)。
4. 选择您的电子邮件提供商（例如Outlook.com或Google）并按照屏幕上的说明添加它。
登录日历(Calendar)后，打开邮件(Mail)应用程序，您应该会在边栏上找到该帐户。
修复邮件和日历
您也可以尝试在Windows中修复(Windows)邮件(Mail)和日历(Calendar)。这应该排除由损坏的应用程序安装引起的问题。
1. 打开设置(Settings )应用程序。
2. 选择应用程序(Apps )>应用程序和功能(Apps & features)。
3. 向下滚动并选择邮件和日历(Mail and Calendar)旁边的高级选项(Advanced options)。
4. 选择终止(Terminate )>修复(Repair)。
如果修复没有帮助，您可以选择将邮件和日历重置为出厂默认设置(reset Mail and Calendar to factory defaults)。为此，请在上述屏幕中选择终止(Terminate )>重置。(Reset )
重新安装邮件和日历
最后，在Windows中重新安装(Windows)邮件(Mail)和日历(Calendar)应用程序。全新安装可能会使“错误 0x80070490(Error 0x80070490) ”消失。
1. 右键单击开始(Start )按钮并选择Windows 终端（管理员）(Windows Terminal (Admin))或Windows PowerShell（管理员）(Windows PowerShell (Admin))以打开提升的Windows PowerShell控制台。
2.粘贴下面的命令并运行它以卸载邮件(Mail)和日历(Calendar)应用程序：
Get-AppxPackage Microsoft.windowscommunicationsapps | Remove-AppxPackage
3. 打开微软商店(Microsoft Store)。搜索(Search)并安装邮件(Mail)和日历(Calendar)。
希望您能快速修复“错误 0x80070490(Error 0x80070490) ”。使操作系统和所有Microsoft Store应用程序保持最新，以尽量减少此问题的再次发生。
FIX: Error 0x80070490 in Windows Update and Mail App
Do yоu keep running into “Error code: 0x80070490” while using Windоws Update or the Mail app in Windows 10/11? It’s an error that you can resolve quite easily (althoυgh yоu may run into inѕtancеs that rеquire adνanced troubleshootіng).
Work your way through the instructions below to fix “Error code: 0x80070490” in Windows Update or the Mail app. If the error occurs in both, apply the fixes in the order they appear.
Fix Error Code 0x80070490 in Windows Update
“Error code: 0x80070490” in Windows Update is often the result of conflicts with antimalware programs, a broken Windows Update cache, or corruption in the operating system. The following fixes should resolve the Windows Update error.
Run Windows Update Troubleshooter
Microsoft knows that Windows Update is prone to numerous issues, which is why Windows 10/11 includes a built-in troubleshooter to help deal with them.
1. Open the Start menu (or press the Windows key) and select Settings.
2. Select System > Troubleshoot (Windows 11) or Update & Security > Troubleshoot (Windows 10).
3. Select Other troubleshooters (Windows 11) or Additional troubleshooters (Windows 10).
3. Select Run next to Windows Update (Windows 11) or Windows Update > Run the troubleshooter (Windows 10).
Once the Windows Update troubleshooter loads, follow all on-screen instructions to fix any detected issues.
Restart Your Computer
If the Windows Update troubleshooter failed to resolve “Error code: 0x80070490”, try restarting your computer – a simple action that usually takes care of most system-related anomalies. Once you’re back on the desktop, run Windows Update and see if the error recurs.
Pause Antivirus Utility Temporarily
Third-party antivirus software often creates conflicts with Windows Update. If you have one installed on your computer, try disabling its live shields temporarily and check if that makes a difference.
You can usually pause an antivirus utility via its system tray icon. If not, check its configuration pane; you may want to refer to its online documentation for specific instructions.
Configure Windows Update Services
You must confirm that each system service related to Windows Update runs correctly.
1. Press Windows + R, type services.msc, and select OK to open the Services applet.
2. Right-click Windows Update, Background Intelligent Transfer, and Cryptographic Services and select Properties.
3. Verify that Startup type is set to Running and the Service status is Running (if not, select Start) in all three services.
Delete Windows Update Folder
A corrupt Windows Update cache is another reason that results in “Error code 0x80070490.” Try deleting the folder that stores the cached files. The procedure involves running a series of commands using an elevated Command Prompt console.
1. Open the Start menu, type cmd, and select Run as administrator to open Command Prompt with administrative privileges.
2. Paste in the following command and press Enter to disable the Windows Update service:
net stop wuauserv
3. Run the command below to delete the Software Distribution folder:
rmdir %systemroot%\SoftwareDistribution /s
4. Execute the following command to restart the Windows Update service.:
net start wuauserv
Run SFC and DISM Scan
You may also want to run an SFC or a DISM scan. Both command-line tools can fix Windows errors by repairing missing or corrupt system files.
1. Right-click the Start button and select Windows Terminal (Admin) or Windows PowerShell (Admin).
2. Run the command below to initiate an SFC scan.
sfc /scannow
3. Once the SFC scan finishes, run the following to invoke the DISM tool:
DISM.exe /Online /Cleanup-image /Restorehealth
If the DISM command above fails, insert your Windows 10/11 installation USB or DVD and run the following command, replacing D with the drive letter of the external media:
DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:D:\RepairSource\Windows /LimitAccess
Update Windows Using Other Means
Updating Windows is another way to fix known issues Windows Update. However, since you can’t update the operating system normally, the alternative is downloading and installing the update files manually via the Microsoft Update Catalog.
1. Check the Windows Update History for Windows 10 or Windows 11 and note down the latest KB ID.
2. Visit the Microsoft Update Catalog and search for and download the update. Make sure to pick the file that matches the architecture (32 or 64-bit) of Windows on your PC.
3. Run the downloaded update file to install it.
Fix Error Code 0x80070490 in Mail App
“Error code: 0x80070490” in the Windows 10/11 Mail app mostly shows up while adding a new email account (e.g., Gmail or Outlook). The following suggestions and fixes will resolve the Mail error.
Run Windows Store Apps Troubleshooter
Windows 10/11 provides access to a built-in troubleshooter designed to address issues with Microsoft Store apps (including Mail).
Under Other troubleshooters or Additional troubleshooters, select Run next to Windows Store Apps (Windows 11) or Windows Store Apps > Run the troubleshooter (Windows 10) to open it.
Update Mail App
The following fix involves updating the Mail app. That should address any known issues behind “Error code: 0x80070490.”
1. Open the Microsoft Store.
2. Select Library at the lower-left corner of the screen.
3. Select Get updates to update Mail and other Store apps on your computer.
Update Windows 10/11
If you aren’t running into the same error with Windows Update (if you are, use the above workaround), try applying any pending operating system updates next.
1. Open the Settings app and select Windows Updates.
2. Select Check for updates.
3. Select Download and install to apply the latest Windows updates.
Check Email Privacy Settings
Incorrectly configured email privacy settings can also result in the 0x80070490 Mail app error. Confirm if everything is set up correctly.
1. Open the Settings app.
2. Select Privacy & security > Email (Windows 11) or Privacy > Email (Windows 10).
3. Turn on the switches next to Email access, Let apps access your email, and Mail and Calendar.
Set Up Account in Calendar App
Another way to fix “Error code: 0x80070490” is by setting up your email account in the Calendar app first.
1. Open the Calendar app.
2. Select the Settings icon and choose Manage account.
3. Select Add account.
4. Select your email provider (e.g., Outlook.com or Google) and follow the onscreen instructions to add it.
Upon signing into Calendar, open the Mail app, and you should find the account listed on the sidebar.
Repair Mail and Calendar
You can also try repairing Mail and Calendar in Windows. That should rule out issues caused by a corrupt app installation.
1. Open the Settings app.
2. Select Apps > Apps & features.
3. Scroll down and select Advanced options next to Mail and Calendar.
4. Select Terminate > Repair.
If repairing doesn’t help, you can choose to reset Mail and Calendar to factory defaults. To do that, select Terminate > Reset in the above screen.
Reinstall Mail and Calendar
Finally, reinstall both the Mail and Calendar apps in Windows. A fresh installation just might make “Error 0x80070490” disappear.
1. Right-click the Start button and select Windows Terminal (Admin) or Windows PowerShell (Admin) to open an elevated Windows PowerShell console.
2. Paste the command below and run it to uninstall the Mail and Calendar apps:
Get-AppxPackage Microsoft.windowscommunicationsapps | Remove-AppxPackage
3. Open the Microsoft Store. Search for and install Mail and Calendar.
Hopefully, you fixed “Error 0x80070490” quickly. Keep the operating system and all Microsoft Store apps up-to-date to minimize the reoccurrence of this issue.
