Maybe you've added a new program to your computer that doesn't get along with Outlook, or your system has a virus. Regardless of the specific cause, there are several key troubleshooting fixes to try that might help. This command clears any broken settings related to the navigation pane and can frequently fix startup issues. Below, we’ll guide you through a series of solutions, from simple, quick fixes to more in-depth repairs, to help you get Outlook up and running again. If it starts without any problems, you can check Outlook not opening on Windows 10 the add-ins. Moreover, it will help you to get the answer to which add-in is causing the issue.

After you remove messages or attachments from your mailbox, the PST file size will not necessarily reduce by itself. In order to shrink the size of the PST file, you need to compact it. Disabling unnecessary plugins is a great way to make your Outlook start faster, run more reliably, take less memory. In Outlook 2003 there are three places to look for installed addins and to disable them. The issues documented in this section have been reported after installing the recent updates listed below.

Rohan Wiese is a Technical Content Writer at Aryson Technologies, specializing in databases, e-mail recovery, and e-mail migration solutions. But little tools that add extra features to Outlook can be the reasons for Outlook corruption. Also, you can recover permanently deleted items and attachments from Outlook with the help of this Outlook repair tool. You can even migrate PST files to Office 365, email servers, and web email clients with the help of this software. We hope you now clearly understand the reasons why users need to repair Outlook profiles for Office 365 accounts.

But the problem arises when you don’t know the correct way of doing it. Find solutions to common problems or get help from a support agent. If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes restarting it will fix the problem. If that doesn't work, you can try repairing it. When you're done, you might need to restart your computer. Now you’ll have a fresh profile that should work properly if the old one was Outlook not opening on Windows 10 the problem.

I want it to open automatically whenever I open my laptop. 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 background. Check the status bar at the bottom of the screen to see if another process is running.

MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application.

Learn how to check the version of Outlook you are using and update your Outlook. This is intended as a general guide to some common errors and I may not be able to troubleshoot through this. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

To repair Outlook not opening on Windows 10 such PST files, you need to use Stellar Repair for Outlook, an advanced Outlook PST repair tool. This tool can repair damaged, inaccessible, and encrypted PST files with complete integrity and precision, regardless of the file size or the degree of corruption. The tool creates a backup of the original PST file (.bak extension) and then tries to repair the original PST file. The time taken by it to repair depends on the level of corruption, inconsistencies, or errors, and size of the mailbox.

MacroView software relies on Microsoft WPF to create its modern interface, which in some cases can be graphics Outlook not opening on Windows 10 display intensive. The MacroView client also passes most write operations via the %appdata% folder, which, when shared, could slow performance. Some security programs continuously scan the entire workstation for threats leading to poor computer responsiveness. Making some minor changes to your virus scanner software can have a positive impact without compromising security. For example, the MacroView program files folder were already scanned on installation and are not updated during general use, so why not create an exclusion path for this location? We have seen greatly improved Outlook startup times when the exclusion path is set.

Optionally, you can try to recover additional repaired items from the backup personal folder. You can use the Inbox Repair Tool (scanpst.exe) to repair corrupted Personal Folders (.pst) and Outlook Data (.ost) files. This is useful when your OST file is relatively big (more than 5 GB) and it would take a long time to recreate it. Also, it can be useful when you are getting errors when importing data from a PST file.