One reason Outlook fails to launch is that you’ve installed faulty add-ins in the app. These add-ins may be working incorrectly, causing the app not to launch. If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again.

Here, we list fixes for the possible causes, starting with the most likely culprit. Go in order so you have best chance of getting back to your inbox as quickly as possible. 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. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again.

Then, right-click a selected file and choose "Delete" (a trash can icon). You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can steps to fix Outlook not opening often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below. In Windows, Outlook not opening errors can disrupt email communication, which can negatively affect productivity and business operations.

Start classic Outlook in safe modeIn Windows 10, click Start.Type Outlook /safe, in the Search programs and files and then click OK.Close and re-open Outlook.If the issue is resolved, you can keep working, or if you have time, take the following steps to find out what COM Add-in is causing the problem.

In this case, you can reset your view settings before opening the steps to fix Outlook not opening app. Select your Microsoft Office installation on the list and choose "Change" at the top. In this case, open Outlook in safe mode where your add-ins aren’t loaded and remove any suspicious add-ins. In most cases, Outlook doesn’t tell you why it isn’t opening, which leaves you guessing as to what has caused the issue. Due to underlying system or PST issues, Outlook may crash, freeze, or not function properly. Find solutions to common problems or get help from a support agent.

Even though Hotmail has been integrated into Outlook.com, Microsoft continues to support users with @hotmail.com addresses. These users have steps to fix Outlook not opening access to the full range of Outlook’s modern email and personal information management features, along with dedicated support for any issues they may encounter. Microsoft’s customer service can be reached via email, phone, live chat, social media, and community forums. We’ve tried contacting them through multiple channels, and we’ve found that phone and chat are the quickest ways to get a response. Couldn’t reach the Outlook customer service via the phone, live chat, or online forums?

Clear unnecessary files from outbox and trash folder to optimize the performance of your Outlook application. Also, try to use the necessary Outlook features to enhance the performance of Outlook as well as Windows. A disturbed internet connection can lead to errors like 0x800CCC0F, 0x a and 0x a.

Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

I ran the Classic Outlook Advanced Diagnostics troubleshooter but that did not provide any useful information. I also ran the Classic Outlook Calendar Check troubleshooter, but that was useless. The first file in the report said that the troubleshooter could steps to fix Outlook not opening not connect because Outlook was not connected to an Exchange server. We often install Add-ins in Outlook to enhance Outlook’s functionality.

Some customers may not be able to see their Profile, Account or Sign Out options when selecting their picture on the top toolbar. Let’s start with the solutions to fix these common Outlook errors. You have seen that we have discussed the various reasons why common Outlook errors happen. Furthermore, we will be going to describe to you the numerous Outlook Errors that are shown in MS Outlook and their fixes.

Avoid using unstable or low internet connection and use a reliable and high-speed internet connection with reasonable download/upload speed. You must have encountered Outlook Connection Error occasionally. The reason behind this error is an invalid entry of the target steps to fix Outlook not opening machine, problems with DNS resolution or an incorrect IP address. Resolve this error by verifying the server’s name or checking the DNS resolution. Some common Outlook errors are listed below with the solutions to fix them. Let’s find out the reasons that caused this error and acquire a knowledge of how you can tackle these errors.