Transient error MapiExceptionNetworkError has occurred. The system will retry

Question

Split from this thread.

Anyone can help me with this issue.

We are receiving the continuously error Transient error MapiExceptionNetworkError has occurred while migrate the public folders.

Answer 1

Hello LouiseMcgee,

I am currently standing by for further update from you and would like to know how things are going. If your problem persists, please feel free to post back. I am glad to try my best to help you further.

If your problem were solved, would you mind sharing your information here? We would be much appreciate for it because this can help other community members that have similar problem with you. Any updates are highly appreciated.

Best Regards,

Sylvie

Answer 2

Hello LouiseMcgee,

We haven’t heard back from you. Do you have any updates?

Best Regards,

Sylvie

Answer 3

Hello Farooq,

I have replied you in your initial thread. Generally, we help community members troubleshoot one issue in one thread. Although the symptom is the same, the root cause behind it might be different, so we split this post from your thread to better help other users.

I will keep helping you in your own thread, you can click this link to access it,  If you have any updates, please also reply in that thread.

We sincerely appreciate your understanding and cooperation.

Best Regards,

Sylvie

Answer 4

Hi

yes, it is cutover

Exchange 2013

No LB

Firewall ,yes.

Can I remove the cut over batch and re-create the new endpointe after adding these ips exclusion?

Is this remove the cutover batch and create again.

Answer 5

Hello LouiseMcgee,

Based on my knowledge, this error message seems to be related to network. May I know if other mailboxes migrated successfully? If so, please kindly pause the migration batch and then make sure the Office 365 URLs and IP address ranges doesn’t be blocked by your firewall or proxy server, then press resume to check the outcome.

In additional, I also need to confirm some information for further troubleshooting:

1. Do you perform the Cutover migration to Office 365?
2. May I know what version of your Exchange server?
3. Does your organization has Load Balancer deployed?
4. Please kindly provide the whole error message via Private Message so that we can investigate it further.

Your cooperation is much appreciated.

Best Regards,

Sylvie