🔧 Fix Microsoft Teams Error AADSTS90072 Fast: Proven 2026 Troubleshooting Guide

Encountering Microsoft Teams Error AADSTS90072 can halt your workday, blocking sign-ins with frustrating messages like "Something went wrong" or authentication failures. Don't worry—this common Azure Active Directory (AAD) error stems from sync issues, cache glitches, or tenant mismatches, and it's fixable in minutes. Whether you're a user or admin, follow these targeted steps to restore access and keep your team connected. Let's dive in! 🚀

What Causes Error AADSTS90072 in Microsoft Teams?

This error often signals an internal Azure AD hiccup during authentication, such as mismatched object IDs or federation realm problems. Here's a quick breakdown:

Pro tip: Admins, check sync health first—it's the #1 culprit. Ready to fix it? 👇

Step-by-Step: Troubleshooting Microsoft Teams Error AADSTS90072 for Users

Start with these quick wins—no admin rights needed. Most users resolve it here!

1. 1️⃣ Clear Browser Cache & Cookies
   Open Teams in your browser (teams.microsoft.com). Press Ctrl+Shift+Del (Windows) or Cmd+Shift+Del (Mac), select "All time" for cookies/cache, then restart. Test login. Works 70% of the time!
2. 2️⃣ Use Incognito/Private Mode
   Bypass extensions: Chrome (Ctrl+Shift+N), Edge (Ctrl+Shift+P). Sign in fresh—extensions often interfere with AAD auth.
3. 3️⃣ Reset Teams Cache (Desktop App)
   Close Teams. Navigate to %appdata%\Microsoft\Teams on Windows (or ~/Library/Application Support/Microsoft/Teams on Mac). Delete contents of these folders: Cache, GPUCache, IndexedDB, Local Storage, tmp. Relaunch Teams. 🔄
4. 4️⃣ Re-Add Your Account
   In Teams desktop: Settings > Accounts > Remove account > Sign out everywhere. Then sign back in.
5. 5️⃣ Update or Reinstall Teams
   Download the latest from official site. Uninstall old version via Settings > Apps first for a clean slate.

If these don't stick, it might be account-side. Proceed to admin fixes or verify your status in myaccount.microsoft.com. Still stuck? Hang tight—admin steps next! 😊

Admin-Only Fixes: Resolve AADSTS90072 at the Source

For IT pros: Dive into Azure portal (portal.azure.com) with Global Admin.

• 🔍 Verify Azure AD Connect Health
  Go to Azure AD > Azure AD Connect > Troubleshooting. Run full sync: Start-ADSyncSyncCycle -PolicyType Delta on sync server. Monitor for errors.
• ⚙️ Check Tenant & Federation Settings
  Azure AD > Enterprise applications > Teams. Ensure no blocks on guest access. Reset federation if mismatched: PowerShell Set-MsolDomainAuthentication -DomainName yourdomain.com -Authentication Managed.
• 📋 Review Sign-In Logs
  Azure AD > Sign-in logs > Filter for AADSTS90072. Note correlation IDs and drill into Conditional Access failures. Adjust policies as needed.
• 🛡️ Test Conditional Access
  Exclude test users temporarily from strict policies. Reference: Microsoft Entra Conditional Access docs.

Prevention Tips & When to Escalate

Avoid future headaches:

• ✅ Enable auto-updates for Teams.
• ⭐ Schedule weekly Azure AD Connect health checks.
• 🔒 Train users on incognito logins for testing.

If all fails, open a support ticket via admin.teams.microsoft.com with sign-in logs. You'll be back chatting in no time! 👏

FAQs: Troubleshooting Microsoft Teams Error AADSTS90072

Does VPN cause AADSTS90072?

Yes—try disconnecting or whitelisting Azure IPs.

Error persists after cache clear?

Admin intervention likely needed for sync/tenant issues.

Mobile app affected?

Clear app cache: Android Settings > Apps > Teams > Storage > Clear.

Fixed your issue? Share in comments below—we love success stories! For more Teams tips, explore our related guides. Stay productive! 🎉