This can happen in a variety of circumstances such as: The OLM files may get corrupted thereby, resulting in the error code. On Mac, the emails, calendar or contacts get stored in the OLM file. However, OLM is the default file type on Mac whereas it is PST on Windows. Possible Causes Of The Outlook Error Code 17099 Microsoft uses the same interface on Windows as well as on Mac. Nonetheless, it is possible to get rid of the error if you know some effective troubleshooting techniques.Įntourage Error 17099 - posted in Apple OSX: Hello, I recently had the 17099 code appear when trying to send/receive emails on Entourage. Also, the error code notifies you of a spam content or virus in the emails. With Outlook error code 17099, you won’t be able to send or receive emails. Despite being easily accessible, it can be prone to technical errors at times. Moreover, you can access it on both Windows as well as Mac. Hope this will be helpful for the community.MS Outlook has become immensely popular as an email application over the years. The best way to figure this out will be to resend the email once again by manually typing in the email addresses and check if it gets resolved. This error message is probably due to an email address in the email which you sent does not exist or is incorrect.

Once you locate all the emails with huge size, either delete them or again move them to On My Computer section (depending on your requirement) Under the 'Search' tab on the ribbon, change the selection to 'All Mail' - 4th button from the left.į. In that change the size from 10000 to 30000 (depending on your attachment size).Į. Click on attachments - greater than 10 MB.ĭ. The search tab will be open on the ribbon.ī.

Tap on the Outlook Search bar at the top right corner.ī. If this does not resolve your issue, you may probably have to search your email account for any emails with a bigger size -Ī. This is usually caused due to an email stuck in your mailbox during synchronization (it can be an old one), hence, you will need to check for the email subject mentioned in the error message under Tools > Sync Error and depending on your requirements, you may either delete it or drag and drop to the On My Computer section which ensure that the email will not synchronize with the email server (if you cannot see On My Computer section, navigate to Outlook Preferences > General > uncheck On My Computer). I see that there has been no response to your query for such a long time and I feel that you may have already resolved the issue but for the people hitting these errors and not able to resolve the issue, you may try the below.

Outlook for mac error code 17099