How to fix Microsoft Teams sign-in error [Resolved]

Microsoft Teams is an app that became a necessity after the start of the pandemic, and almost everyone uses it for online meetings and presentations, lectures, and more. But many Windows users are encountering errors while trying to log in to the Microsoft Teams app on their systems.

According to these Windows users, they were frustrated when they couldn't log in and Teams' apps threw error messages. There could be several potential reasons, some of which are not installing Microsoft Teams properly, users changing the settings of the Teams app without their knowledge, unstable internet connection, etc.

After looking into these factors, we have come up with some solutions in this article that can help users resolve this issue and possibly be able to log in to the Teams app again on Windows systems.

Fix 1 – Reset or Repair Microsoft Teams App

When the settings of the Microsoft Teams application are changed unknowingly by the user or other programs while using the application on the system This type of error occurs. Therefore, we recommend users to repair or reset the app through the Settings app.

Let’s see how to do this on a Windows system in the following few steps.

Step 1: Press the Windows R keys simultaneously to open the "Run" box.

Step 2: Type ms-settings:appsfeatures in the Run box and press Enter to open Installed Apps.

Step 3: In the Installed Apps page, type Microsoft Teams in the search bar.

Step 4: Then, click on the three horizontal dots of the Microsoft Teams app from the search results, as shown in the image below.

Step 5: Select Advanced options from the list, as shown.

Step 6: Scroll through the Advanced Options page and go to the "Reset" section.

Step 7: Click the "Reset" or "Repair" button to reset/repair the application as shown in the image below.

NOTE: Reset will remove data from the app, repair will not.

Step 8: When finished, close the window.

Now try to check if you are able to log in to the Microsoft Teams application on your system.

If this doesn't solve the problem, try the other solutions given below in this article.

Fix 2 – Delete/Clear Microsoft Teams Cache Memory

Any application on the system saves information as a cache in its data folder, such as login details or other settings. The data may become corrupted, or the data may fill the cache. At that point the user must clear the app’s cache by deleting all files in the folder, as described in the instructions below.

Step 1: Go to the taskbar and click on the Show hidden icons symbol as shown below.

Step 2: Then right-click on the Microsoft Teams application icon on the system tray.

Step 3: Click Exit from the list, as shown below.

Step 4: Next, open the Run command box by pressing the Windows R keys simultaneously.

Step 5: Copy and paste the following command into the Run box and press the Enter key.

%appdata%\Microsoft\Teams

Step 6: In the open Teams folder, press the CTRL A key and simultaneously press the SHIFT DEL key to select all files and click Yes" to delete them permanently.

Step 7: After deleting them, close the Teams folder.

Step 8: Now press the Windows key and enter Microsoft teams.

Step 9: Select the Microsoft Teams app from the search results to open it.

#Step 10: Now try to log in to the Teams application on your system.

Fix 3 – Check your Internet connection

One of the main solutions is to check your Internet connection and make sure you have a stable and fast Internet connection on your system when such an issue occurs. We recommend that our users check their internet connection using the following steps.

1. 如果您使用 Wi-Fi 适配器进行 Internet 连接，请重新启动路由器一次。
2. 如果您使用的是以太网连接，请从系统中拔下以太网电缆，然后重新插入。
3. 现在检查互联网连接是否稳定。如果仍然不稳定，请联系您的互联网服务提供商以获得更好的连接。

连接稳定后，检查问题是否解决。

就是这样。

修复 4 – 检查 Microsoft Teams Server 是否已关闭

当用户在使用系统上的任何应用程序时遇到任何登录/登录错误时，Microsoft 团队服务器可能会出现问题。服务器可能已关闭，或者他们正在进行一些维护。因此，如果任何用户想要检查他们的服务器是否已关闭，那么他们可以通过单击此处访问该网页。

如果发现服务器已关闭或正在维护中，我们会要求用户等待一段时间，然后再次尝试检查服务器是否已启动。

服务器启动后，请尝试检查您是否可以毫无问题地登录 Microsoft Teams 应用程序。

谢谢！

修复 5 – 使用 Microsoft Teams Web 访问它

在解决任何应用程序问题之前，需要花费时间来调查和诊断其根本原因。
同时，您可以使用 Microsoft Teams 在线网络进行任何紧急会议，直到问题得到解决。

请按照以下步骤了解如何在线访问 Microsoft Teams 网站。

第 1 步：打开系统上的任何 Web 浏览器（例如：Google Chrome）。

第 2 步：在浏览器上打开一个新选项卡并输入以下URL，然后按Enter键。

team.live.com

第 3 步：然后，输入Microsoft 帐户电子邮件地址，然后单击下一步继续。

第四步：输入密码，点击登录。

第 5 步：单击电子邮件地址以发送验证码。

第 6 步：在您的收件箱中输入从 Microsoft 客户团队收到的邮件中的代码，然后单击验证。

第 7 步：如果是您自己的系统，请单击“是”以保持登录状态。否则，单击否。

第 8 步：现在您已登录 Microsoft 团队 Web 应用程序，可以开始将其用于任何会议。

修复 6 – 在您的系统上重新安装 Microsoft Teams

当应用程序在系统上的安装未正常完成或中途停止时，会出现登录错误、应用程序无法正常启动等问题。

因此，我们建议用户卸载 Microsoft Teams 软件，然后重新安装。

以下是重新安装 Teams 应用程序的一些说明。

第 1 步：按Windows键并键入已安装的应用程序打开已安装的应用程序页面。

第 2 步：然后，从搜索结果中单击已安装的应用程序系统设置，如下所示。

第 3 步：在搜索栏输入团队并单击三个水平点（显示更多选项）以查看更多选项，如下所示。

第 4 步：从列表中选择卸载。

第 5 步：然后，单击卸载开始卸载 Microsoft Teams 应用程序。

第 6 步：根据系统速度和性能，它会在几秒钟内将其卸载。

第 7 步：要重新安装Microsoft Teams 应用程序，请单击此处转到下载页面。

第 8 步：这将在新选项卡中打开。

第 9 步：单击桌面下载继续。

第 10 步：然后，为家庭或小型企业或工作或学校选择下载 Teams按钮，如下所示。

Step 10: After downloading the executable file, open the file as shown in the figure below.

Step 11: Follow the on-screen instructions carefully to properly install the Microsoft Teams app without any interruptions.

Step 12: Then, open the Teams app and check if the login error persists.

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