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Common Outlook errors explained

Outlook stores certain data, such as email signatures and the spelling checker dictionary, in the AppData folder. If the network is performing slowly, Outlook must wait for read and write operations to the AppData directory to finish. When you try to accept a shared Outlook.com calendar using your Microsoft 365 for business account in Outlook 2016, you might receive the "Something went wrong" error or your sign-in might fail. Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. If you are having issues sending email, this might be due to validation issues with your Microsoft Account.

Common Outlook errors explained

Fixes or workarounds for recent issues on Outlook.com



To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? Visit Firefox support to learn how to Disable or remove Add-ons. Customers using the contact support buttons at the foot of the support pages, or the "email us" links in support Virtual Agent, are unable to open the Help Pane. Check that you have not accidentally blocked the Gmail domain when blocking one Gmail user.

Common Outlook errors explained

Step 5 - Check whether your mailbox is too large



This is another common issue in Outlook, that occurs due to its extreme use. We recommend that you move several items in your larger folders to separate folders, or that you archive those items by using the AutoArchive feature. If the problem doesn't occur after you restart Outlook, one of the add-ins is likely the cause of the problem. Restore the add-ins one at a time until the problem does occur to determine which add-in is causing the problem.



Step 6 - Check whether your AppData folder is being redirected to a network location



If it wasn’t for Outlook we’d be able to ditch the tables and embrace the . In fact, our very own email newsletters are coded with this method. While most email clients will respect your CSS, Outlook will not respect CSS to resize images.

Outlook Error Codes: Common Issues and Solutions



By systematically checking the above points, you can resolve the majority of Outlook send/receive errors. In summary, Outlook error codes may look intimidating, but they usually point to straightforward issues like incorrect settings, authentication requirements, or network blocks. With the appropriate adjustments – correcting server names, enabling authentication, using the right ports, and adjusting security software – your email should start flowing again . If the users receive an error message then, it means some file/files get corrupted in the PST files. It is a troublesome situation for the Office 365 troubleshooting guide user because due to this error he is unable to access the Outlook data. To fix this situation, users can use SCANPST.EXE to repair their PST files.

Why am I having problems with my Outlook email?





  • We will ensure that all information is retained and only contacts with matching information in all fields will be cleaned up.
  • If you have email messages in an email program, you must import your email messages and addresses to the new user profile before you delete the old profile.
  • A Selective Startup or "clean boot" process can help you identify problems that are caused by application conflicts.
  • VML will allow you to get those beautiful background images working on Outlook but will add a layer of complexity to your email coding process.
  • For example, if you have a font size of 13px or 15px, try converting it to 14px.
  • After you’re done, go back to Outlook and tap on Work offline to start working online again.
  • Outlook will always try to render your images at their native dimensions which can be annoying when you’re creating larger images and scaling them down, a common technique for high DPI devices.


Many of these items can be automatically checked by the Classic Outlook Advanced Diagnostics troubleshooter. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Some users may not be able to empty their Deleted Items folder. If you access your Outlook.com account through the iOS Mail app, you may be repeatedly asked to enter your username and password.