Outlook is not working with Outside internet mails are getting slow

[Sasikumari]

Hello Team,

I hope everyone doing well!

One of my customer is facing issue with  Outlook is not working with Outside internet mails are getting slow. Below steps we have followed:

Outlook keeps getting stuck when connected via a personal hotspot or WAN. This issue has been present since the initial configuration. Outlook works fine within the LAN; the problem occurs only when using a personal hotspot or Wi-Fi. We configured a test policy, limiting it to the destination address, but after committing the changes, the issue persisted. Upon review, the policy seems to be correctly configured, and the traffic logs indicate that the correct policy is being hit. However, the application status shows as TCP-FIN. After researching the error, we found several relevant articles. However, after reviewing those articles, the customer did not agree with the suggested changes.

Regards,

Sasikumari.