As your mailbox size increases, more resources are required to open each folder. If you have a large number of items in any single folder, you may experience performance issues during certain operations. For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC.

Add-ins are extensions that you can install to enhance Outlook’s functionality and unlock additional features, like CRM integration. But these add-ins can sometimes result in compatibility issues, especially if they’re not up-to-date or poorly coded. A conflicting add-in might cause Outlook to freeze, crash, or not open at all.

Regular backups, staying vigilant for signs of corruption, and knowing when to use the right repair tools are essential practices. In cases of severe corruption, it is recommended to use a professional repair tool like the SysCurve PST Repair Tool. This tool is adept at addressing serious damage that basic repair methods might not fix, efficiently helping to repair corrupt PST files without hassle. This approach is particularly useful when the original PST file is not severely corrupted but has minor issues that prevent normal operation. It can also be used when you can open the PST file but experience errors or issues when accessing certain data within it. PST files are essentially data storage files used by Microsoft Outlook.

A corrupted new profile or Outlook profile can lead to delays, crashing, troubleshoot Outlook errors or the Outlook not responding error. If creating a new profile solves your issue, you can return to the Show Profiles dialog and delete your old profile. Your profile stores a variety of settings that control how Outlook looks and feels. You can create a new profile and then add your email accounts to the new profile.

Depending on the answers, you could possibly skip large portions of this guide or even directly get a solution to your startup issue. Either disable caching or reduce the cache from unlimited, 12 months or whatever it is, to 3-6 months, all other data, the user would have to click ‘access on server’ or some other similar verbiage. 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 Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities.

If you close outlook(make sure its not in the system tray) then click on start and type Domain, then find Access work or school. You should see the Microsoft account, click on troubleshoot Outlook errors it and disconnect it. I'm having an issue with one Outlook 365, the program open and get stuck at loading the user profile, any profiles. I decided to try and fix it by uninstalling and reinstalling. I also removed some old add-ins and an old, inactive account (but Outlook worked no problem with these for a long time).

Microsoft says Office users may experience problems launching Outlook and other apps on Windows 10 and 11 due to conflicts with antivirus software after installing the latest Patch Tuesday update. I did every solution what was written in this community, but this didn't resolve my issue. A troubleshoot Outlook errors vast community of Microsoft Office365 users that are working together to support the product and others. Then, each item in your calendar folder is checked for known problems that can cause unexpected behavior, such as meetings that seem to be missing.

You can create a new profile and then add your email accounts to the new profile. If repairing your Microsoft 365 programs didn't resolve your issue, move on to the next step. For example, the first time you try to Dismiss All on a list of reminders, Outlook asks you if you're sure you want to do that. If you don't choose an option on that troubleshoot Outlook errors dialog box, Outlook won't let you do anything else.

It could be as simple as an out-of-date version of Outlook's software. Once an update has been run on your system, the bug may be rectified. Here is a list of things to try to stop getting that pesky password prompt after every action you do on Outlook. If you are using Gmail or Google Workspace as well as the Outlook calendar, it would be nice to have them populated with the same information. Here is how to make sure your Outlook is showing the same information as your Google Calendar. It might be that antivirus software is trying to block a function that is repeatedly trying to squeeze through the firewall.

Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. You might need to set Windows Update to automatically download and install recommended updates.

When your mail profile is damaged, Outlook often fails to start as well or you’ll find yourself encountering one error after the other. troubleshoot Outlook errors One of the first and most effective steps is to launch Outlook in Safe Mode. This mode turns off all add-ins and custom settings, helping you quickly identify if a third-party add-in is causing the startup problem. After running any of the above processes, make sure you check for updates again to verify that all updates have been installed. Did Outlook still work correctly the last time you used it?