Troubleshoot Outlook for Windows issues

If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. TrustedTech is a Microsoft solutions Partner in the following areas. Message 2 - The file you're attaching is bigger than the server allows. If you can't receive new email messages, there are several troubleshooting steps you can take. If you're trying to set up an iCloud account, follow the steps in Add or manage an iCloud email account in Outlook. steps to fix Outlook not opening For Gmail accounts, see Add a Gmail account to Outlook. We go above and beyond the average software reseller because we built our business on trust. As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind. There are also notes about legacy per-user auth being an issue, however we had two accounts left in per-user auth but none with the issue. If you think that it is patch related, roll back the patch and see if that fixes it for the end users. If it’s an RDS server and the cache is also on the server, if the server crashes, reboots abruptly, is full, there are many reasons. Instead of removing the profile, remove the OST file and let it recreate. Find solutions to common problems or get help from a support agent. Use the People page to find, view, create, and edit contacts and contact lists. To learn more about managing contacts in Outlook.com, go to Create, view, and edit contacts and contact lists in Outlook.com. At the top of the message list, you can choose how you want to view the list. There might also be a visual alert that a message is unread, has an steps to fix Outlook not opening attachment, or is flagged. To change your Mail settings so your inbox looks and behaves the way you want it to, see Personalize your new Mail experience in Outlook.com. As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind. This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart. If classic Outlook repeatedly prompts you for a password during setup, make sure that your caps lock isn't turned on. This can also happen if you've entered your username incorrectly. Outlook stores all your email messages, meetings and events, contacts, and tasks in data files. You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues. Use the classic Outlook for Windows connectivity troubleshooter to troubleshoot Outlook connectivity issues. Do you have another machine you can try to duplicate the problem on, preferably with a configuration that is as steps to fix Outlook not opening close to possible to the machine that has the problem? Identifying patterns helps to diagnose what the problem might be. To update your password in Outlook, see Change or update your email password. Or, you can disable any antivirus software add-ins that are installed in Outlook. Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server. Optionally, if you have a Microsoft Exchange online archive, you can move items to that archive or create retention policies to automatically dispose of older items. For more information, see You may experience application pauses if you have a large Outlook data file. These issues might occur if a mailbox contains steps to fix Outlook not opening lots of folders or there are lots of items in any one folder. There's no hard limit to how many folders a mailbox can contain or how many items a folder can contain. It gets better because you also resolve all the Outlook opening issues. If the in-box Program cannot fix the corrupted Outlook PST files, you can also try Wondershare Repairit for Email. It is a powerful and almighty software that can be applied to fix corrupt Outlook PST files in any scenarios. If you are trapped in a similar situation that my Outlook is not opening, you may feel disturbed about the problem. In the following post, you will find out solutions for the common Outlook not opening problems bonus tips to prevent the problem from happening again. Maybe you've added a new program to your computer that doesn't get along with Outlook, or your system has a virus. If none of that worked, I’d restore the server from backup when it was working and see what happens moving forward. If both of those don’t fix it, I’d run a full maintence cycle on the server. I couldn’t find anything in the Event Viewer that points to the root cause, nor could I find any similar issues online. These troubleshooting techniques apply to Outlook 2016 and 2011 for Mac. Creating a new Outlook profile may resolve some performance issues. MDaemon Technologies is a pioneer in developing email and email security software helping to protect customers from evolving cyber-security threats. Its products and services are trusted by thousands of organizations in over 140 countries. For more than two decades, the company’s products have been developed with the ongoing input of IT professionals who demand reliable, affordable software that requires minimal effort to manage.