What is causing error code 17099 in Outlook?

July 31, 2020 by Owen Faunce


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Here are some simple methods that you can use to resolve the error code 17099 problem in Outlook.



Know How To Fix Mac Outlook Error 17099

Fix Error Code 17099 In Microsoft Outlook For Mac 2011/16

How do I fix error 0x800ccc0e in Outlook?

Fix IMAP error -0X800CCC0E in MS Outlook
  1. Check your internet connection.
  2. Check your email account settings in Outlook.
  3. Delete emails if they look suspicious.
  4. Check your antivirus application and disable it.
  5. Check your firewall settings.
  6. Start Outlook in Safe Mode.

Here we will deal with an OLM file error. The approach assumes a manual error-free solution to fix the problem. Since there are some errors in Outlook that Mac user is facing, here we will try to find the causes as well as a suitable solution to fix Mac Outlook error code 17099.

How do I fix error 0x80042109 in Outlook?

Follow these instructions and it's time for us to go:
  1. Open Outlook.
  2. Select Tools.
  3. Open your account settings.
  4. Double click the problematic email address.
  5. Select More settings.
  6. Open Advanced.
  7. Set the outgoing server SMTP port to 587 and select TLS encryption.
  8. Confirm your selection and find the changes.

Microsoft Outlook is one of the most popular email applications today. No computer application works as expected, be it an email program or otherwise. The same is true for Outlook. From time to time, the user may encounter one or two errors. One of these errors is Outlook syntax error 17099, which is experienced by Mac OS users. In the next section, you will find a step-by-step solution to fix this problem.

Impact Of Error Code 17099 Outlook 2011/16 Mac

The error prohibits sending or receiving messages and indicates that the message contains spam or viruses.

error code 17099 in outlook

Before proceeding,let's imagine the situation provided by a Mac user Outlook:

“As always, I work with Mac Outlook 2016 on my laptop. Everything went fine, but I don't know how the 17099 error code suddenly occurred. This error interrupts me from working because I cannot email / can I email someone to help someone fix Mac Outlook error 17099? "

Outlook Email Error Code 17099: Root Causes

Fix Error Code 17099 In Ms Outlook For Mac 2011

October 2020 Update:

We now suggest using this software program for your issue. Also, Reimage repairs typical computer system errors, defends you from file loss, malicious software, computer system failures and optimizes your Pc for maximum performance. You can fix your Pc challenges swiftly and prevent others from happening by using this software:

  • Step 1 : Download and install Computer Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista - Microsoft Certified).
  • Step 2 : Click on “Begin Scan” to uncover Pc registry problems that may be causing Pc difficulties.
  • Step 3 : Click “Repair All” to fix all errors.


The solution addresses the issue using the Microsoft Database Utility. This utility rebuilds the database by following these steps:

It's Time To End The Sentence

After reading this blog, a Mac OS user can fix Mac Outlook error code 17099. Follow each properly equipped step to get it fixed without complications. Before sharing the solution, the process was practically implemented and we got a positive result. So, you can easily try the above mentioned fail-safe manual solution to fix this 17099 error in Outlook 2016/11.



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