Why IT Teams Struggle with Microsoft 365 Over Time

Users got their accounts and Outlook just worked. Files started piling up in SharePoint folders or individual OneDrive accounts. From the outside, the system looked totally fine and stable.

But Microsoft 365 is much more than a simple email host. It acts as the digital identity for your whole company, your main file cabinet, and the playground where everyone collaborates. Today, it is also the data source that AI tools use to learn about your business.

When you leave all these layers on their default settings, things still function. You only start seeing the cracks when you run a security audit or try to turn on fancy new AI tools. That is usually when companies realize they need to "harden" their tenants. This involves looking back at the original setup and tweaking the knobs so the system actually stays secure.

The Link Between Good Configuration and AI

Everyone is excited about AI right now. Tools like Microsoft Copilot are built to sift through your documents, calendar invites, and chats. However, a lot of businesses find out during their first week of testing that these AI systems listen to your existing permissions perfectly.

If a worker can see a file today, the AI can find it for them instantly. This is a massive problem because most Microsoft environments get "messy" over time. People share files with the wrong teams, folders get copied over and over, and old sharing links stay active forever. After five years of this, it becomes a nightmare to track who actually has access to what.

AI doesn't care about your intent; it only sees the permissions you have set. Microsoft mentions this in their own setup guides for Copilot. They make it clear that you need to fix your identity protection and data governance before you even think about deploying AI. For professional groups like law firms, this is a serious risk. Client files and internal gossip often live in the same systems. If your permissions have drifted, an AI might accidentally show a junior staffer information that was meant for partners only.

Step 1: Sorting Out Identity

Everything in Microsoft 365 starts with who you are. Whether you are opening a Word doc or checking your mail, the system uses Microsoft Entra ID to verify your identity.

A lot of firms still use just a name and a password. This is a huge risk because passwords get stolen all the time. The biggest win for security is usually just turning on multi-factor authentication for every single person.

You should also look into "conditional access" rules. These let you block logins from weird countries or devices that don't belong to the company.

Step 2: Checking Your "Secure Score"

Microsoft actually gives you a built-in grade called Secure Score. It looks at how you have everything set up and compares it to what they recommend.

Most admins are shocked to see how many safety features they never turned on. It usually happens because the initial setup was done in a rush. Secure Score gives you a checklist of things to fix, like better alerts or tougher device rules.

Step 3: Setting Up Data Rules

Data governance is another area that usually gets ignored until it is too late. Microsoft uses a tool called Purview to handle this.

This tool lets you put "sensitivity labels" on files. A label can stop a private file from being sent to someone outside the company. It also lets you set "retention" rules so you aren't keeping old, useless data forever. Without these rules, AI tools end up digging up old trash that should have been deleted years ago.

Step 4: Cleaning Up SharePoint and OneDrive

Over time, SharePoint and OneDrive became the "junk drawer" of law firms. Permissions in these tools tend to expand slowly. Someone shares a folder with a contractor, or a link gets sent to a client, and those permissions stay active for years. A big part of hardening a tenant is auditing these links and making sure sensitive data isn't sitting out in the open.

Step 5: Locking Down the Devices

Security isn't just a cloud problem. It also involves the laptops and phones your team uses. Microsoft Intune is the tool that manages all that hardware.

You can use it to make sure every laptop is encrypted and running the latest updates. You can also pair it with Microsoft Defender for Endpoint to watch for hacks. If you don't manage the devices, a hacker can just walk into your cloud through a compromised laptop.

Getting the Environment Ready for AI

Once you have your identity, files, and devices under control, you can finally see how data moves in your business. Then you can decide if a tool like Copilot should have the "keys to the kingdom" or if it should only look at certain folders.

Cleaning up before you start is much easier than trying to fix things after an AI tool leaks a sensitive document.

Maintenance is a Constant Process

Your Microsoft 365 tenant is never "finished." People leave the company, new partners join, and new apps get connected. This is why you have to keep checking your settings. It isn't a one-off project but a habit of staying secure.

Working with AKAVEIL TECHNOLOGIES

AKAVEIL TECHNOLOGIES specializes in helping firms clean up their Microsoft 365 tenants. We look at your Secure Score, fix your permissions, and get your team ready for the world of AI.

If you want to chat about an assessment, reach out here:

Website: https://www.akaveil.com

Email: info@akaveil.com

Phone: 833-252-8345

About the Author

Ariel Perez started AKAVEIL TECHNOLOGIES after years of working in the world of big IT infrastructure. He focuses on helping professional firms use the Microsoft cloud without losing sleep over security.