Tag: PowerShell

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Practical Graph: Find Large Mailbox Items with the Microsoft Graph PowerShell SDK

• Post author:By Tony Redmond

Server-side filtering is always best when PowerShell retrieves items from the server. In this article, we explore how to construct a server-side filter to find large mailbox items over a certain threshold. The answer lies in filtering against an old Outlook property. The Graph represents the property through the single value extended property resource. But how do you filter against such a thing?

• Exchange Online

January 20, 2026

How to Use the Exchange Admin API

• Post author:By Tony Redmond

On November 17, Microsoft announced the Exchange Admin API, a REST-based method of interacting with Exchange Online administrative functions. Having a new API sounds exciting, but in reality the Exchange Admin API is a limited tool to help Exchange Web Services (EWS) developers migrate their apps before Microsoft retires EWS in October 2026. That being said, here's how the API works.

• Exchange Online

December 1, 2025

Finding Unused Proxy Addresses for Exchange Online Mail-Enabled Objects

• Post author:By Tony Redmond

A request came in about how to find unused proxy addresses for Exchange Online mail-enabled objects. There's no out-of-the-box report available for proxy address usage, but we can solve the problem by using a PowerShell script to download historical message trace data to check every proxy address for all mailboxes against. The question then is what to do with the unused proxy addresses?

• Exchange Online

November 5, 2025

One comment

Practical Graph: Creating a Multi-Workload User Activity Report

• Post author:By Tony Redmond

Microsoft 365 comes with many usage report API covering different workloads. This article explains how to use PowerShell to extract usage data for multiple workloads to combine together to create a holistic view of user account activity within a Microsoft 365 tenant.

• Microsoft 365

October 20, 2025

Creating a Comprehensive Inactive Guest Account Report

• Post author:By Tony Redmond

Many examples of how to report inactive guest accounts are available on the internet, but they're all flawed because they make decisions based on the last sign in. That's a shortsighted method because it doesn't take guest activity into account. This article explains how to combine audit data with sign-in data to create an enhanced view of guest account activity so that intelligent decisions can be made to keep or retain the accounts.

• Entra ID

October 13, 2025

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Practical Teams Phone: Reporting Missed Calls on Call Queues

• Post author:By Martin Heusser

Microsoft Teams Phone has improved over the years, but missed call reporting in call queues remains a gap. In this blog, Martin Heusser shows how to use Microsoft Graph and PowerShell to build a custom report that captures missed and answered calls, complete with caller info and agent details. Until Microsoft adds shared call history natively, this DIY approach is a solid workaround.

• Teams

October 1, 2025

Practical Graph: Preparing PowerShell Scripts to Run in Azure Automation

• Post author:By Tony Redmond

Many PowerShell scripts need to run on a scheduled basis or have to process large amounts of data. Azure Automation runbooks are a good way to handle both types of task. This article describes three important and practical steps to improve writing PowerShell code for Azure Automation.

• PowerShell

September 29, 2025

Optimizing SharePoint Online Performance for Large Document Libraries

• Post author:By Mezba Uddin

In this blog, we explore practical ways to optimize SharePoint Online performance for large document libraries. From avoiding the 5,000-item list view threshold to using PnP PowerShell and Microsoft Graph API for bulk updates, you'll learn how to keep your libraries fast, responsive, and scalable.

• Microsoft 365

September 15, 2025

2 Comments

Practical Graph: Analyzing External Meeting Participants for Teams Meetings

• Post author:By Tony Redmond

A reader asked if it's possible to analyze the external meeting participants for Teams online events. The information is available through the Events Graph API, and some PowerShell code written using the Graph PowerShell SDK quickly extracts events to analyze and determine the set of external domains meeting participants come from.

• Microsoft Graph

September 11, 2025

Practical AI: Make Your LLM Local with Jan

• Post author:By Paul Robichaux

In this episode of Practical AI, we explore how to run large language models locally using Jan, a privacy-first, open-source desktop client. With support for Model Context Protocol (MCP) servers, Jan lets you integrate tools like Microsoft Learn directly into your AI workflow—no cloud required.

• Blog

September 9, 2025

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The Best Way to Configure Defender for Servers on Windows

• Post author:By Thijs Lecomte

In this article, we explore the best way to configure Microsoft Defender for Servers on Windows. From PowerShell and GPO to SCCM and Defender Security Management, we break down the pros and cons of each method.

• Security

September 8, 2025

Investigating OAuth App Abuse with the Graph Activity Log

• Post author:By Mezba Uddin

In this installment of the Graph Activity Log series, we uncover how attackers exploit OAuth app consent to silently access Microsoft 365 data. Using targeted KQL queries and PowerShell automation, this blog shows how to detect, investigate, and respond to these stealthy identity-based threats.

• Microsoft 365

August 26, 2025