# Microsoft 365
---
title: Connecting Microsoft 365 to WatchDog Security
category: Integrations
integration_type: oauth
products_supported:
- Posture Management
- Inventory
- Compliance Center
---
This guide explains how to connect **Microsoft 365** to WatchDog Security using **OAuth authentication**.
Once connected, WatchDog will begin monitoring your Microsoft 365 environment for security posture risks, configuration issues, and administrative configuration details.
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## What WatchDog Monitors
:::tip[]
WatchDog operates in **read-only mode** and does **not modify configuration settings** within your Microsoft 365 environment.
:::
After the integration is connected, WatchDog may monitor:
**Microsoft 365 Admin Center Settings**
- Tenant configuration settings
- Security and administrative configuration
- Organization-level Microsoft 365 security settings
- Identity and tenant-level configuration metadata
The exact information collected depends on the permissions granted during authorization.
---
## Requirements
Before connecting the integration, ensure the following:
- You have **Global Administrator access** to the Microsoft 365 tenant
- You're an **Account Owner** or **Security Admin** in the WatchDog Security portal
- You know your **Microsoft 365 Tenant ID**
---
## Step 1 — Obtain Your Microsoft 365 Tenant ID
:::note[]
WatchDog requires your **Tenant ID** before beginning the OAuth authorization process.
:::
You can locate your Tenant ID in the **Microsoft Entra Admin Center**:
1. Log into the [**Microsoft Entra Admin Center**](https://entra.microsoft.com)
2. Expand the Identity dropdown from the left-hand navigation
3. Select Overview
4. Copy the Tenant ID under Basic Information
---
## Step 2 — Open the Integration in WatchDog
1. Log into the [**WatchDog Security Portal**](https://app.watchdogsecurity.io)
2. Navigate to: Management → Integrations
3. Locate **Microsoft 365**
4. Click **Connect**
5. Enter your Tenant ID when prompted. If you’re unsure how to find your tenant ID, click here.
6. Sign in using a Global Admin Microsoft account.
7. Approve the requested permissions on the Microsoft consent screen.
That’s it — WatchDog will start syncing data from your Microsoft 365 environment.
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## Initial Sync
- WatchDog will begin collecting data from Microsoft 365
- The first synchronization typically completes within **5–10 minutes**
- **Posture Management**
- **Inventory**
- **Compliance Center**
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## Troubleshooting
### Authorization Failed
Verify the following:
- The **Tenant ID** was entered correctly
- You have **Global Administrator permissions**
- The Microsoft consent screen was approved successfully
If no data appears after connecting:
- Wait for the initial synchronization to complete
- Verify the integration was successfully authorized
- Disconnect and reconnect the integration if necessary
---