help with executive assistant slowness on Outlook Desktop App

Zach 106

let's dive right in

we have EAs who have been experiencing severe slowness and freezing with outlook, this looks to happen when they open multiple calendars when scheduling meetings or trying to accept invites on behalf of the executives they support.

we can't seem to narrow down a good way to improve performance and overall have been told the following from Ms:

limit the number of calendars you have in your calendar list
limit the number of full access mailboxes you have
limit the number of windows of outlook you have open

currently, we are in a hybrid environment with on-premise exchange 2016 and exchange online. all of our users are on exchange online, outlook is configured for cache mode, unsure if calendars also follow cached mode because of this. currently using office 365 suite fully updated.

The laptop fleet is intel i7, with 16GB of RAM and 256GB of HDD space, currently Dell Latitude 7400 series in circulation.

even after these suggestions and trying to limit them users still have consistent freezing where they wait several seconds, anyone have thoughts if it might be something on-prem causing this or any options we have/could try?

Joyce Shen - MSFT 16,676 Reputation points

2022-09-22T02:22:07.847+00:00
Hi @Zach

How do you access and manage the calendars? Via Delegate, calendar permission or other methods? Have you checked if the same issue occur when using OWA? You could take a try of the methods below to see if any help:

To avoid the interference of Outlook add-ins, it's suggested to restart your Outlook in safe mode(“Win“+”R “ > Type outlook.exe /safe > Click Enter) and see if the issue continues.

Corrupted profile may also causes this issue, please try to create a new profile(Control Panel>Mail>Show profiles>add) to test.

please use the Microsoft Support and Recovery Assistant (SaRA) for advanced diagnostics to check that problems. It will generate the details report about your Outlook configuration to troubleshoot this issue. See under How to scan an Outlook configuration for known issues

Besides, I found some links which might be related to your issue:
accessing multiple shared calendar or shared folders could affect Outlook performance,
7 Tips to prevent your Calendar from crashing or becoming out-of-sync

Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Joyce Shen - MSFT 16,676 Reputation points

2022-09-27T05:24:12.26+00:00

Hi @Zach

Is there any progress about this issue so far?

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