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This ensures Outlook and Windows run the same DLL versions and registry references.
Use Microsoft Support and Recovery Assistant (SaRA)
Whitelist Outlook in your antivirus/firewall settings to restore live sync. If sync logs display "Completed," Outlook is connected. If stuck on "Disconnected," fix your mail server settings. Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the modern authentication troubleshooting background. Check the status bar at the bottom of the screen to see if another process is running.
Step 8 – Recreate Your Outlook Profile
Start with basic network checks, enable Cached Exchange Mode, and repair your data files if needed.Following the above steps—from safe mode diagnostics to repairing data files—will restore functionality in most cases.This ensures Outlook and Windows run the same DLL versions and registry references.Check the status bar at the bottom of the screen to see if another process is running.It automatically repairs sync and credential problems for Outlook and Exchange accounts.Occasionally, classic Outlook tries to run a process in the background.This process checks for structural issues and automatically fixes them.It’s better to clear cache, recreate send/receive groups, and reset your profile for faster results.
Once back online, Outlook will immediately start syncing your mailbox with the server. It’s better to clear cache, recreate send/receive groups, and reset your profile for faster results. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally.
Why Outlook Fails to Update Until Restart
This solution prevents display rendering errors that occur after driver or DirectX updates. Third-party add-ins are among the most common Outlook Stuck on Synchronizing Folders culprits for Outlook not opening properly. Safe Mode allows you to start Outlook with all extensions temporarily disabled. Once the scan completes, reopen Outlook and check if the issue is resolved.
How to Fix Outlook Not Opening on Windows 11
Rebuilding OST and resetting send/receive fixes it in most cases. You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below.
Delete the existing group and click "New." Name it All Accounts and ensure both "Include this group in send/receive" options are checked. This forces Outlook to refresh all accounts automatically without requiring a restart. Sometimes, aggressive antivirus programs block Outlook’s execution. If Outlook opens, whitelist FixTechGuide fix for stuck folders the Outlook process in your antivirus settings.