If you manually type in the secondary connected account email address in the "From" field, the email is sent as "On behalf of" your primary Outlook.com account. If you typically use an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias. Some customers may experience a delay when trying to create a new email address, or alias, for their Outlook.com account. This issue has been mitigated and we are continuing to monitor the issue to ensure stability. The root cause was the Visit FixTechGuide for solutions deployment of an incorrect campaign data file, which led to false positive campaign detection. We have since reverted to the right data file and the outbound email flow has returned to a normal state.
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.
You can automatically repair your Office program files to resolve such problems as Outlook freezing or not responding.
Download the latest updates by visiting your antivirus software vendor's website.
When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC.
So, one can try these instructions and can solve their problems quickly.
To check if you have received the fix, review your contact list to confirm duplicates have been removed.
General Troubleshooting Checklist
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 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. It is an inbuilt utility present in Outlook to repair this issue. If this approach doesn’t work then try other alternative approaches to fix the corrupt Outlook data file. When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC.
Error 2: User Cannot or Unable to Open/Access Outlook
While these Microsoft accounts work in other Microsoft products (e.g. OneDrive, Windows, Xbox), they are non-functional when visiting Outlook.com. Outlook.com (the web version of Outlook) and Outlook apps require a 1st party alias (Outlook/Hotmail/Live/MSN) to send and receive email, use calendar, etc. MSO conditional statements are a fantastic tool allowing us to target Outlook desktop versions specifically, even allowing us to target specific versions. This allows us to create workarounds for Outlook that would otherwise have us pulling our hair out. If you want your background images to work on Outlook 2016 and other older desktop versions you’ll need to dive into the world of Vector Markup Language (VML). The desktop versions of Outlook, especially those predating Outlook 2013, employ the Word rendering engine instead of a dedicated HTML rendering engine.
Run Microsoft Office Repair
These steps are provided in a specific order based on commonality and complexity. 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.
Solutions for Other Unrecognized Outlook Errors
What is the most common Outlook error?
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. You must have at least three user accounts on the computer to complete these steps. To create a user profile, you must first create a user account. To determine whether this problem is caused by a corrupted user profile, create a user profile to see whether the problem still occurs when you use the new profile. 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.
Users are required to fix this issue first before applying these methods. You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in Outlook.com as additional accounts in the Outlook profile. Availability has recovered, and engineers are investigating the root cause and identifying problematic servers. The team is sweeping all remaining capacity to identify and address residual issues. Customers with only a 3rd party email address set up as the username of their Microsoft Account will be asked to add a 1st party Microsoft alias to their account before accessing Outlook.com. Sometimes, the account may open without any error but late gives an error prompt when logging in.