Expert Advice

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Exchange Hybrid Mailbox Migration: Step-by-Step Guide with Minimal Downtime

Planning an Exchange hybrid mailbox migration?

This step-by-step guide explains how to move mailboxes from on-prem Exchange to Microsoft 365 with minimal downtime, no mail flow disruption, and happy users.

Covers hybrid prerequisites, large mailboxes, Outlook behavior, and when to use tools like Stellar and SysTools.

Read the full guide:

Step-by-step Exchange hybrid mailbox migration guide covering prerequisites, remote move batches, large mailboxes, and third-party tools. Ex

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How to Fix AADSTS90023 & AADSTS9001026 in Microsoft Teams

Struggling with AADSTS90023 or AADSTS9001026 errors in Microsoft Teams—especially for guest users on Android?

This isn’t a simple sign-in issue. It’s usually a cross-tenant token validation problem in Azure AD (Entra ID), and the Teams mobile app is where it breaks most often.

I’ve shared a step-by-step guide covering: ✔ Why Teams Web works but mobile fails ✔ How to fix token cache issues ✔ When Microsoft Authenticator helps ✔ When it’s time to escalate to Microsoft Support

If you manage B2B guest access, this one’s worth bookmarking.

Read the full guide here:

Learn how to fix AADSTS90023 and AADSTS9001026 errors in Microsoft Teams guest sign-ins on Mobile apps. Step-by-step Azure AD solutions. Mic

[expert-advice]

Delete Microsoft Teams Chats: Complete User & Admin Guide

Deleting Microsoft Teams chat history isn’t always permanent—and that surprises a lot of people.

This guide explains: • How users delete chats • Why admins must use eDiscovery • How retention policies automate cleanup • What other participants still see

If you use Microsoft Teams at work, this is worth knowing.

Learn how to delete Microsoft Teams chat history using eDiscovery, retention policies, or user settings. Covers 1:1, group, and meeting chat

[expert-advice]

Microsoft Teams Channel Restore Search Issue Explained | Fix Missing Channel Messages After Restore

Ever restored a private channel in Microsoft Teams and noticed old messages missing from search? You’re not alone — it’s actually expected behavior!

Here’s why: when you restore a Teams private channel, Microsoft runs a background re-indexing process that can take up to 72 hours before all messages become searchable again.

In our latest guide, we explain why this happens, how to check if your content is healthy, and what steps can help speed it up. Perfect for IT admins, Teams managers, and anyone responsible for collaboration governance.

Read the full guide:

How to Fix Missing Channel Messages After Restore - Restored a private channel in Microsoft Teams, but can’t find your older messages in sea

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How to Set Up PSTN Calling in Microsoft Teams

Did you know you can turn Microsoft Teams into your full business phone system?

With PSTN calling, you can make and receive traditional phone calls right inside Teams — no extra hardware needed.

Our latest guide covers: Microsoft Teams PSTN calling setup

How to set up Teams Phone

Assigning numbers & Caller ID

Emergency calling & call queues

Read the full step-by-step guide:

Microsoft Teams PSTN calling setup - Enable PSTN calling in Microsoft Teams with this complete setup guide. Learn how to configure Teams Pho

[expert-advice]

Exchange Server SE and Active Directory Schema Duplication Bug: A Migration Story

Exchange Server SE + Active Directory Migration Gone Wrong (Migration Story)

Upgrading to Windows Server 2025 Domain Controllers and Exchange Server SE? Here’s a must-read case study of a real-world migration that uncovered a Microsoft schema replication bug — causing Event ID 1203, lsass.exe CPU spikes, and schema replication failures across mixed environments.

If you’re running Exchange hybrid, this bug could impact you too.

Read the full breakdown, root cause, and advanced workaround here:

When it comes to Active Directory migrations and Exchange Server upgrades, even the most carefully planned deployment can take an unexpected

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Active Directory Replication Issues: Common Causes, Fixes & Troubleshooting Tips

Struggling with Active Directory replication issues?

From DNS errors to time sync failures — even small misconfigurations can break your entire network replication.

Learn how to diagnose, fix, and prevent AD replication errors like a pro. Keep your domain controllers healthy and your users connected — always.

Read the full troubleshooting guide here:

Learn how to diagnose and fix common Active Directory replication issues - including DNS errors, network failures, and time sync problems. A

[expert-advice]

Best Video Recovery Software for iPhone, Android, Windows & Mac

Lost your important videos? Don’t panic — you can get them back!

We tested and compared the Top 3 Video Recovery Software for iPhone, Android, Windows & Mac — including Stellar, EaseUS, and Wondershare Recoverit.

Find out which one truly works for deleted, formatted, or corrupted videos.

Read the full guide here:

Losing your precious videos - whether family memories, YouTube footage, or professional projects - can be heartbreaking. Luckily, modern bes

[expert-advice]

Best Photo Recovery Software for iPhone, Android, Windows & Mac

Lost your precious photos? Don’t panic — recovery is possible!

Check out our latest guide on the Best Photo Recovery Software for iPhone, Android, Windows, and Mac. From accidental deletions to corrupted SD cards, discover the tools that actually work.

Read the full comparison & pick the right one for you:

Lost photos on iPhone, Android, Windows, or Mac? Discover the best photo recovery software for iPhone, Android, Windows & Mac. Features, pri

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How to Fix iPhone Keeps Restarting or Boot Loop iPhone 15, 16, 17 & iOS 17/18/26

iPhone Keeps Restarting or Stuck in Boot Loop?

If your iPhone 15, 16, or 17 keeps turning off and on, or gets stuck on the Apple logo — don’t panic! We’ve compiled a complete step-by-step guide to fix restart loops, software glitches, and iOS update issues.

From draining your battery to DFU mode and Apple Support solutions — we’ve covered everything to get your iPhone running smoothly again!

Read the full guide here:

Fix the iPhone that keeps restarting or is stuck on the Apple logo loop. Works with iPhone 15, 16, 17 on iOS 17, 18, and 26. Easy, proven tr

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iPhone Is Disabled or Unavailable? Data Recovery, Fixes, and Backup Solutions

Locked out of your iPhone? Seeing “iPhone Unavailable” or “iPhone is Disabled”?

Here’s the truth data recovery is only possible if you have a backup. No backup = no recovery.

But don’t worry—there are safe ways to erase, reset, and restore your iPhone so you can get back to using it.

Read the full guide here:

Learn how to fix an iPhone showing “Unavailable” or “Disabled,” recover data from backups, and prevent future lockouts with iCloud or iTunes

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AI Agents vs Agentic AI: The Next Big Shift in Artificial Intelligence

AI Agents vs. Agentic AI: What’s the Difference?

AI is evolving fast, but many people confuse AI Agents with Agentic AI. AI Agents = digital specialists that handle specific tasks (like chatbots, IT ticket bots). Agentic AI = the orchestrator that takes initiative, coordinates multiple agents, and drives outcomes like a strategic manager.

In short: AI Agents complete tasks. Agentic AI achieves goals.

Read the full breakdown here:

Artificial Intelligence (AI) has evolved from a buzzword to a game-changer in the business world. Today, it's seamlessly integrated into eve

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Agentic AI Threats: How Autonomous AI Is More Dangerous Than Deepfakes

While deepfakes manipulate content, agentic AI can act on its own—moving money, leaking data, impersonating employees, and launching cyberattacks at scale.

We’re not just facing fake videos anymore. We’re facing autonomous AI systems that make decisions without human oversight.

Businesses need to rethink AI security now—before agentic AI becomes the biggest cybercrime engine we’ve ever seen.

Deepfakes are scary. But Agentic AI? That’s next-level dangerous.

When deepfakes first exploded into the headlines, they felt like the ultimate AI nightmare. Fake videos of presidents saying things they nev

[expert-advice]

Agentic AI is changing the game!

Unlike traditional AI that just waits for commands, Agentic AI thinks, decides, and acts on its own. Imagine a co-worker who never sleeps, never complains, and keeps your workflows running 24/7.

From banking to healthcare, businesses are already using it to save time, reduce errors, and make smarter decisions. Sure, it comes with challenges like security and cost, but the payoff? Massive efficiency and a real competitive edge.

The future of work isn’t just AI—it’s Agentic AI working alongside humans.

Quick Snapshot: Agentic AI is the next evolution of artificial intelligence - AI that doesn’t just follow instructions, but thinks, plans, a

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LLM Security in 2025: Why It Matters More Than Ever

Large Language Models (LLMs) like GPT-4 are changing industries—but they also open new doors for cyber risks. From prompt injection attacks to data leaks and training data poisoning, securing LLMs is now a business-critical priority.

Key Takeaways: Protect sensitive data with strict access controls Monitor for adversarial inputs & output manipulation Follow the OWASP LLM Security & Governance Checklist Prepare a proactive incident response plan

LLMs can unlock huge value, but only if deployed securely, ethically, and responsibly.

Read the full breakdown on LLM Security: Risks, Examples & Best Practices

Large Language Models (LLMs) like GPT-4, Claude, and LLaMA have changed the way we interact with technology. From chatbots to document summa

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Heathrow Cyberattack Chaos: Why Flights Were Delayed Across Europe

A massive cyberattack on Collins Aerospace’s check-in system threw Heathrow, Brussels & Berlin airports into disarray. Flights delayed. Bags stuck. Passengers stranded.

This isn’t just an IT glitch — it’s a wake-up call for aviation security. In 2025, keeping planes flying means protecting digital systems as much as runways.

Read the full breakdown:

If you were flying through Heathrow last weekend, chances are your trip didn’t go as planned. What should’ve been a routine Saturday at Euro

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Jaguar Land Rover hit with £2B cyberattack bill

A major cyberattack has forced Jaguar Land Rover to halt production — costing the automaker nearly £2 billion in lost revenue.

The big shock? JLR wasn’t insured against hacking, leaving it fully exposed. Factories remain paused until October 1, with suppliers and 100k+ jobs under threat. Parent company Tata Motors also felt the heat, with shares dipping as investors react.

This isn’t just JLR’s problem — it’s a wake-up call for the entire automotive industry. Cybersecurity isn’t optional anymore.

Read more:

Jaguar Land Rover (JLR) is in the middle of a nightmare it didn’t see coming. A cyberattack on September 2 shut down production across sever