如今， Microsoft Teams^{(Microsoft Teams)}是在线交互空间中令人垂涎的产品。人们越来越多地将其用于个人和专业目的。随着这种使用的增加，我们有责任保持其产品完好无损。但是，在尝试通过桌面应用程序登录Microsoft Teams时，发生了几起人们报告错误的事件。^{(Microsoft Teams)}

编码为错误 CAA2000B^{(Error CAA2000B)}，可能有几个因素可能导致此错误。今天，我们将讨论如何解决登录Microsoft Teams时遇到的此错误，以及最初可能导致该错误的原因。

建议用户尝试通过网站登录Microsoft Teams，以确保错误是由桌面应用程序引起的。

修复 Microsoft Teams 登录^{(Fix Microsoft Teams Login)}问题：我们无法让您登录

如果Microsoft Teams说我们无法让您登录，请按照这些经过验证的提示修复Microsoft Teams 登录^{(Microsoft Teams Login)}问题。

1. 在您的计算机上重新启动Microsoft Teams应用
2. 检查系统时间和日期
3. 清除Microsoft Teams应用的缓存文件
4. ^{(Remove Password)}从凭据管理器中^{(Credential Manager)}删除密码
5. 清除浏览器缓存并重试
6. 重新安装 Microsoft 团队

1]在您的计算机上重新启动^(Restart)Microsoft Teams应用程序

这是一个非常基本的解决方案，但在这些情况下可以更频繁地完成工作。请按照以下步骤干净地重新启动您的应用程序。

^{(Close Microsoft)}从后台关闭 Microsoft团队并通过在“开始”菜单^{(Start Menu)}上搜索或使用Ctrl + Alt + Delete快捷键打开任务管理器。^{(Task Manager)}

在“进程”选项卡下，搜索Microsoft Teams应用程序并右键单击它。

进一步选择“结束任务”。

尝试再次打开应用程序并检查错误是否已解决。如果没有，请尝试下面提到的其他解决方案之一。

相关^(Related)：Microsoft Teams 错误 CAA2000B^{(Microsoft Teams Error CAA2000B)}，我们无法注册您的设备。

2]检查系统时间和日期

检查您计算机上的时间和日期是否正确，这可能会影响连接到Microsoft Teams的能力。

3]清除^(Clear)Microsoft Teams应用程序的缓存^(Cache)文件

损坏的缓存^(Cache)数据文件可能会导致各种错误，包括有问题的错误。损坏的缓存可能会阻止身份验证证书，这反过来又会导致在尝试登录应用程序时出现某些问题。以下是清除 Microsoft Teams 缓存数据的方法。

通过键盘快捷键或右键单击任务栏并进一步选择该选项并结束任务来打开任务管理器，如第一个解决方案中所教的那样。^{(Task Manager)}

在您的计算机上打开文件资源管理器^{(File Explorer)}，然后在地址栏上粘贴如下规定的地址：

%appdata%Microsoft eamsCache

此地址会将您带到存储Microsoft Teams缓存文件的位置。用户可以尝试自行定位此部分，但通常埋得很深。

Press Ctrl + 'A' 选择所有文件，然后同时按Shift + Del键删除所有文件。确认该过程并等待它完成。

该过程尚未完成，因为您还必须为以下所有路径一一复制它：

%appdata%Microsoft EAMS应用程序缓存缓存

%appdata%微软 EAMS lob_storage

%appdata%Microsoft EAMS 数据库。

%appdata%Microsoft eamsGPUcache

%appdata%Microsoft eamsIndexedDB

%appdata%Microsoft EAMS本地存储

%appdata%Microsoft 电子邮件

完成后，尝试再次登录Microsoft Teams并检查错误是否仍然存在。

阅读^(Read)：如何将 Microsoft Teams 聊天链接添加到电子邮件签名^{(add Microsoft Teams Chat Link to Email Signature)}。

4]从凭据管理器中^{(Credential Manager)}删除密码^{(Remove Password)}

^{(Remove credentials)}在Credential Manager中删除与 Office 和 Teams 相关的凭据。

在搜索框中键入“凭据管理器”，然后选择Windows 凭据^{(Credentials)}并展开相关凭据记录以将其删除。

相关^(Related)：修复Microsoft Teams 登录错误代码0xCAA20003、0xCAA82EE2、0xCAA82EE7、0xCAA20004、0xCAA90018。

5]清除^(Clear)浏览器缓存并重试

如果您在浏览器中遇到此问题，则可以清除浏览器缓存并重^{(clear the browser cache)}试。

阅读^(Read)： 如何在 Microsoft Teams 中使用个人功能^{(How to use Personal Features in Microsoft Teams)}。

6]重新安装微软团队

在开始卸载过程之前，您应该从后台关闭MS Teams应用程序。^{(MS Teams)}

打开计算机上的控制面板^{(Control Panel)}。选择按类别^(Categories)查看图标，然后在程序^(Program)部分下，单击卸载程序。

从您已安装在计算机上的程序组中找到 MS Teams^{(Locate MS Teams)}，右键单击它并选择卸载^(Uninstall)。等到^(Wait)该过程完成后再进行下一步。

按 Windows + 'R' 组合键打开运行^(Run)提示，并在空白处输入 '%appdata%'。这将打开Appdata文件夹，该文件夹存储您 PC 上运行的各种应用程序的数据。

为了确保MS Teams已正确且干净地卸载，您必须在此处找到Teams文件夹，右键单击它，然后按Delete。

再次打开运行命令，这次输入'% Programdata %'。这将带您进入另一个隐藏文件夹，其中存储了所有与程序相关的设置。如果您在这里也发现了MS Teams文件夹并将其删除。

该过程完成后，您现在可以访问Microsoft Store并下载^{(Microsoft Store)}Microsoft Teams的新副本。

除了我们教您在下面进行故障排除的问题之外，错误CAA2000B背后还可能有其他几个原因，例如^(CAA2000B)MS Teams的过时版本，它可能与您构建的Windows不兼容或您的^(Windows)Windows凭据之间存在冲突。

我们相信上述修复之一将帮助您解决错误。

Fix Microsoft Teams Login issues: We couldn't sign you in

Microsoft Teams is a coveted product in the online interaction space these days. People have been increasingly using it for both, personal and professional purposes. With this heightened usage comes the responsibility to keep their product intact. There have, however, been several incidents of people reporting an error while trying to log into Microsoft Teams via the desktop application.

Coded as Error CAA2000B, there can be several factors that could lead to this error. Today, we will be discussing how to fix this error faced while logging into Microsoft Teams and what all might have caused it in the first place.

It is recommended for users to try and log into Microsoft Teams via the website to make sure that the error is caused by the desktop application.

Fix Microsoft Teams Login issues: We couldn’t sign you in

If Microsoft Teams says, We couldn’t sign you in, then follow these proven tips to fix Microsoft Teams Login issues.

1. Restart the Microsoft Teams app on your computer
2. Check system time and date
3. Clear the cache files of the Microsoft Teams app
4. Remove Password from Credential Manager
5. Clear browser cache and try again
6. Reinstall Microsoft Teams

1] Restart the Microsoft Teams app on your computer

This is a pretty elementary solution but gets the job done more often than not in these cases. Follow the steps below to restart your application cleanly.

Close Microsoft teams from the background and open the Task Manager by search on the Start Menu or with the Ctrl + Alt + Delete shortcut key.

Under the ‘Processes’ tab, search for the Microsoft Teams application and right-click on it.

Further select ‘End Task’.

Try opening up the application again and check if the error has been solved. If not, try out one of the other solutions mentioned below.

Related: Microsoft Teams Error CAA2000B, We weren’t able to register your device.

2] Check system time and date

Check if the time and date on your computer are correct, which can affect the ability to connect to Microsoft Teams.

3] Clear the Cache files of the Microsoft Teams app

Corrupted Cache data files can cause all kinds of errors, including the error in question. The corrupted cache can block authentication certificates which can, in turn, result in certain hiccups while trying to log into an app. Here is how you can clear out the cache data for Microsoft Teams.

Open the Task Manager via the keyboard shortcut key or by right-clicking on your taskbar and further selecting that option and end the task, as was taught to do in the first solution.

Open the File Explorer on your computer and paste the address as prescribed below on the address bar:

%appdata%\Microsoft\teams\Cache

This address is going to take you to the location where the cache files for Microsoft Teams are stored. Users can try and locate this section on their own, but it’s generally buried very deep.

Press Ctrl + ‘A’ to select all the files and press Shift + Del keys together to delete all the files. Confirm the process and wait till it has completed.

The process isn’t complete yet as you have to replicate it one by one for all of the following paths too:

%appdata%\Microsoft\teams\application cache\cache

%appdata%\Microsoft\teams\blob_storage

%appdata%\Microsoft\teams\databases.

%appdata%\Microsoft\teams\GPUcache

%appdata%\Microsoft\teams\IndexedDB

%appdata%\Microsoft\teams\Local Storage

%appdata%\Microsoft\teams\tmp

Once completed, try logging into Microsoft Teams again and check if the error still persists.

Read: How to add Microsoft Teams Chat Link to Email Signature.

4] Remove Password from Credential Manager

Remove credentials related to Office and Teams in Credential Manager.

Type “Credential Manager” in the search box, then select Windows Credentials and expand related credential records to remove them.

Related: Fix Microsoft Teams Sign-in Error Codes 0xCAA20003, 0xCAA82EE2, 0xCAA82EE7, 0xCAA20004, 0xCAA90018.

5] Clear browser cache and try again

If you are facing this issue in your browser, then you could clear the browser cache and try again.

Read: How to use Personal Features in Microsoft Teams.

6] Reinstall Microsoft Teams

Before you begin with the uninstallation process, you should close the MS Teams application from the background.

Open the Control Panel on your computer. Select to view your icons by Categories and under the Program section, click on Uninstall a program.

Locate MS Teams from the group of programs that you have installed on your computer, right-click on it and select Uninstall. Wait till the process is completed to move onto the next steps.

Open the Run prompt by pressing the Windows + ‘R’ key combination and enter ‘%appdata%’ in the blank space. This will open the Appdata folder, which stores the data for the various applications running on your PC.

In order to ensure that MS Teams has been uninstalled properly and cleanly, you have to locate the Teams folder here, right-click on it, and press Delete.

Open the run command again and this time enter ‘%Programdata%’. This will take you to yet another hidden folder that stores all the program-related settings in it. If you spot an MS Teams folder here too and delete it.

After that process has been completed, you can now visit the Microsoft Store and download a fresh copy of Microsoft Teams.

Apart from the issues we have taught you to troubleshoot below, there can be several other causes behind the error CAA2000B too, like an Outdated version of MS Teams, which may be incompatible with your Windows built or a clash between your Windows credentials.

We believe that one of the aforementioned fixes will help you resolve the error.

Related posts

• Fix Microsoft Teams Call Queues不工作

• Windows 11/10中的Fix Microsoft Teams Error caa70004

• Fix Microsoft Teams高memory and CPU使用问题

• 修复 Microsoft Teams 不断重启 (2022)

• 如何访问 Microsoft Teams 管理中心登录

• Zoom vs Microsoft Teams VS Google Meet vs Skype

• Microsoft Teams最佳Productivity apps

• Turn Off Read Receipts在Microsoft Teams为团队成员

• 如何在Microsoft Teams静音所有参与者麦克风

• 在Windows 10中将应用程序添加到Microsoft Teams App bar的方法

• 如何在会议中使用Microsoft Teams至share content中的Share Tray

• 如何在Linux and macOS上安装Microsoft Teams

• 如何添加Zoom给Microsoft Teams

• Microsoft Teams不自动更新

• 如何在Microsoft Teams and Skype上使用Snapchat Camera filter

• 该文件已被锁定的错误上Microsoft Teams

• 10最佳Microsoft Teams Tips and Tricks帮助您获得最佳状态

• 如何在模糊的Microsoft Teams meeting背景

• 如何过滤Microsoft Teams Activity Feed

• 如何在Microsoft Teams中更改Team Picture