“An unknown Error has Occurred in Outlook” Error 17199 — Solved
Tags: Error 17199, Outlook, Error Code 17199, Outlook Error 17199, Email

Outlook Error Code 17199- While sending, receiving, or deleting email messages of Outlook 2011 on Mac, you may receive these error messages:

“An unknown error has occurred in Outlook” / “The message in your Outlook could not be sent” / “The account which created the message could not be found” / “Error Code 17199.”

Microsoft Outlook manages multiple types of personal data, such as emails, calendars, tasks, contacts, etc. It is software that is mainly used to send and receive emails. Microsoft Outlook has various versions available such as Microsoft office 2010, 2013, 2016, 2019, and Microsoft 365.

You can sync your Outlook data to your Mobile, Computer, and Tablet. You can categorize your Email messages into Folders.

Note- Microsoft Outlook 2019 for Mac has introduced various features such as focused inbox, swipe right or left, Email templates, etc.

Let’s start with the causes behind the generation of error 17199. You can also read this blog to Fix Microsoft Outlook error 0xc0000005.

Reasons Behind the Error Code 17199

If you are unable to send, receive, or delete the Outlook messages due to error code-17199, then the following are the causes behind it:

Sudden shutdown of the computer or Outlook application.

Malicious attacks lead to file corruption.

The large size of files produces storage issues.

Users try to access Mac OLM files to Windows Outlook without changing the file format.

Interference during the installation of Mac Outlook leads to corruption in OLM files format.

How to Get Rid of the Error Code 17199 or Unknown Error?

Follow the below-described methods to resolve “An unknown error has occurred in Outlook”

Method 1- Verify the connection of your web

Make sure your network and web services support Outlook for sending Email messages.

support Outlook for sending Email messages. After checking the network connection login into your email account.

Method 2- Remove all emails available in Outbox

Open the Outbox of your email account and delete all the outgoing emails and click on send/receive.

If the 17199 error is not resolved yet, move to the next method.

Method 3- Login again using your valid Username and Password

To again enter your valid credentials and follow the below steps-

First of all, open Outlook .

. Next, click on the “ Tools ” and then tap on “ Account ”.

” and then tap on “ ”. Move to the left pane and choose the “ Current user account ”.

”. Now, type the valid “ Email id” and “Password” .

and . Confirm the correct server name under the “ Incoming server” and “ Outgoing server” .

and “ . Finally, stop the Application and “Restart” Outlook again.

Method 4-Rename the existing file or create a new file

Try to rename the already available file or create a new file. Creating new files can overcome multiple corruption issues.

Method 5- Resolve OLM Corruption

The above methods are tricky to perform, and if the error is still not resolved, then there is corruption in your OLM file, In this situation, you have to recover data from your Mac OLM and reload the recovered data to the mailbox. Download OLM Exporter Tool and remove OLM corruption to fix error 17199.

This utility is full of features like:

The OLM files can be converted in bulk at a time.

The date filter facility is available to store the data according to the date.

Maintains the folder hierarchy.

Users can migrate selected data files from their mailbox.

This utility exports the data into a PST file that can be imported to Mac Outlook using the Import feature of Mac Outlook.

Final Words

We hope you got the solution to get rid of the error code 17199. Several reasons and methods are described that can help you to fix this blunder. Besides, there could be a possibility of OLM corruption due to which you will be in trouble to resolve this unknown error. So, try to recover your Outlook OLM using an OLM Converter that is capable of handling corrupt OLM as well, that could fix error 17199 quickly.

Feel free to ask other queries, and we are open to your valuable feedback.