How To Fix Gmail Error 17099 On Outlook For Mac Pc?

We are all very familiar with the Outlook mail application. this is currently the best email client software in the world, through which you can manage different types of mail accounts from one place. The Outlook app is available for both types of operating systems (Windows and Mac). and the most important thing is that it also works well on both platforms.

but when you use outlook app on mac computers and set up a gmail account on it. due to some strange circumstances. sometimes outlook can’t connect to gmail and it shows you error code 17099 can’t send message on screen.

what is email error code 17099 in outlook for mac? why does it keep showing up when accessing gmail account on mac?

Email error code 17099 is related to an authentication problem.

This often happens when the smtp protocol is not working properly or you did not fill in the correct information when setting up the account on macbook.

Apart from this, this setting is also responsible for gmail error code 17099.

1. The smtp username or password is incorrect.
2. the smtp address is not valid.
3. the port number is incorrect.
4. microsoft database requires rebuild.
5. antivirus or firewall security is blocking outgoing ports.
6. other problems related to the application.

how do i fix gmail error code 17099 in outlook for mac?

if you can’t send emails from gmail via outlook and you encounter error code 17099, don’t worry; With the help of the steps below, you’ll get it fixed quickly and this email will always work fine.

you may also read: how do i fix temporary gmail 500 error?

close the application and restart the mac pc-

• please close the outlook application on the mac.
• now press the power button and click power off.
• wait until it turns off; once it is completely off, you need to wait 20 seconds and then turn it back on.
• now open the outlook application and press the send & receive button. to see if it completes the processor shows you the authentication error.

clean output folder-

sometimes gmail error code 17099 appears in outlook for mac pc due to output folder. When there are too many pending emails available in the outbox, it can break the smtp server.

so you should delete all pending messages from the outbox and then send another message.

• open outlook mail application.
• now select your gmail profile.
• click the output folder available in the left menu.
• if you see the emails in the folder, select them and then press the delete button.

verify internet connection-

When you can’t communicate with gmail via outlook, you need to check the internet connection on the mac computer. most likely you are having trouble connecting to the internet. that is why gmail is not working in outlook app.

rebuild outlook app-

When outlook database is not working properly on computer, you will see error 17099. In such case, you need to repair outlook database.

1. log in to the macbook with the admin user.
2. close the outlook application and other applications on the mac computer.
3. now open the application window and then click microsoft office.
4. here, you need to click on the database utility option.
5. here, you need to select the database and hit the rebuild button.

finally, the database rebuild process will begin. this process may take some time. so please don’t close the deal; once done, you will see the finish button. press that button to close the trade.

verify smtp configuration-

sometimes outlook error code 17099 appears in gmail due to smtp server error. When gmail is configured with the wrong outgoing server details, it will not be able to authenticate the gmail outgoing process.

In such a situation, you will be able to receive emails in gmail through outlook, but you will not be able to send any new messages.

To fix this error, your email settings must match the following.

1. open the outlook application.
2. click the outlook menu option and go to the preferences tab.
3. click the gmail account(the one you are having problems with).
4. Enter smtp.gmail.com in the output address.
5. click the advanced button and enter the port number 587.
6. now enter the email address and password in the outgoing username and password section.
7. finally, press the ok button.

now you can send a message again. let’s see, does gmail send & receive errors in outlook or not?

delete & re-add gmail account-

After trying the above steps, if you still can’t fix gmail account error code 17099 in outlook app from mac pc.

delete gmail account in outlook app then add it again. Along with that, you should also check your antivirus and firewall settings on mac pc. make sure they are blocking outgoing port 465 or outlook app. now there will be no errors in the outlook app anymore.

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