I have been using the New Outlook app for a few months now, no issues. I am able to open the older Outlook app, but steps to fix Outlook not opening cannot access the new app. I have restarted my laptop multiple times and tried to Uninstall the New Outlook but to no avail. So, there are several factors that cause the Outlook web access issue.

It can automatically diagnose issues, troubleshoot, and fix problems with Outlook. Note that the above link is for desktop Outlook for Windows. A more general version that can also fix Office, Microsoft 365, and other Outlook problems can be found here. If you can't receive new email messages, there are several troubleshooting steps you can take.

Still, like other apps, Outlook also runs into issues sometimes. A free demo version of the software is available to download. You just need to install the software and you are all good to run the software. With the demo version itself, you can recover and see the recovered data. When the exact reason for the error is not known you have to try multiple methods to fix steps to fix Outlook not opening the error. Here, we present you with distinct methods that can help to fix the error.

Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite. This happens to accounts that are configured in the iOS Mail app. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device.

Click on the below button to download this utility and secure your data from any unforeseen situation. Ad blockers, privacy extensions, or script blockers can steps to fix Outlook not opening break Outlook Web. Temporarily disable browser extensions one by one and then reload Outlook Web to check if it works after disabling each extension. Corrupted cache files can prevent Outlook Web from loading. Select Site settings and click the Reset Permissions button.

To resolve that there are several solutions you can use, some common ones are mentioned in steps to fix Outlook not opening this flowchart. Sometimes browsers can automatically disable some of the Outlook web features, which can lead to this issue. Follow the below given steps to enable the permissions.

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. An out-of-date antivirus program may sometimes cause errors when you try to start Outlook as there may be compatibility issues between your antivirus program and Outlook.

After finishing one step, if it does not resolve the issue move on to the next. 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. Avoid using unstable or low steps to fix Outlook not opening internet connection and use a reliable and high-speed internet connection with reasonable download/upload speed.

Although the files are very robust, they can sometimes become corrupted and eventually stop working. All versions of Outlook from 2013 and above are configured to automatically receive updates from Microsoft. These updates ensure that the most recent security improvements are downloaded to fix bugs and apply steps to fix Outlook not opening patches. If the "Outlook Not Responding" issue did not cause you troubles in the past, it stands to reason to turn off the recently installed add-ins. I usually disable them one-by-one, closing Outlook with each change.

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. You may see one of the following errors in a pop-up message on your screen. If you are unable to connect or are prompted for your password repeatedly attempt the following options.

This reliable Outlook PST repair tool can repair large PST files efficiently and steps to fix Outlook not opening quickly, regardless of the severity of corruption. It allows to save the mailbox data from the repaired PST to a new PST file and various other file formats, including MSG, EML, RTF, HTML, and PDF. The error message states that there are some issues with Outlook PST files. This error tends to pop-out when you attempt to launch Outlook. Outlook simply denies the existence of PST file because the file is corrupt and cannot be accessed anymore. Another reason can be Outlook is set to read-only mode, which stops Outlook from accessing the PST file.

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.