Why did my outlook 365 address book change

Why did my outlook 365 address book change windows#

One of the users has access to several mailboxes (all on the same server). I did however notice on the outlook connection status window some strange Avg Response times. I uninstalled MSOffice and reinstalled, no change.I checked the event viewer on the clients and the server and nothing noteworthy there either.

I checked the bandwidth and the traffic peaks at 3%, so thatвЂ™s not it.

I changed outlook from Cached Mode to Online and that made it worse.

The setup with the MS Connectivity tool and nothing noteworthy there.

Outlook has got this address correctly via Autodiscover. On the remote sites when running MS Outlook 2016 or 2019 when clicking on an email or changing folders outlook goes to not responding.ДЄfter a few seconds it comes back to life and works fine, until you change folders again.Д¬hecking the outlook connection status, I can see the connections to the server going via the VPN (using the local internal address, exchange.ad.). 3 users, running a window 2012 R2 servers in a different domain with trust relationships to HQ.

one remote sites is connected to the head office via site-to-site VPNs also using DrayTek routers.

2 users, so no servers just PCs running in a local workgroup.

one remote sites is connected to the head office via site-to-site VPNs using DrayTek routers.

Note the hybrid exchange was only setup to allow MS Teams App to see the calendars

However this issue I writing about today has been happening before the addition of Hybrid Exchange and 365. The addition of 365 Hybrid is only recent as the company wanted Teams during these current times we find ourselves in. In addition the site is also running ADConnect as the company is using MS Teams from 365.

Why did my outlook 365 address book change windows#

one is the head office running Windows 2016 servers (AD environment), one of the servers is running Exchange 2016 (Latest CU13) with one CAS.MS Outlook keeps not responding when requesting data from Exchange