AutoDiscover is slow with the EWS Managed API

Yes, it can take a while. However, you may be able to speed things up. The best practice is to store the EWS web service URL set on the service object and use it next time instead of doing AutoDiscover again. SCP AutoDiscover should be avoided unless you need to use it. Also keep in…

0

Code running against Outlook is very slow when PST or OST is on a network folder or non-physical/non-VHD drive.

There is no support for performance issues with Outlook where the PST or OST are on a network folder or non-physical/non-VHD drive.  See below: Limits to using personal folders (.pst) files over LAN and WAN links https://support.microsoft.com/en-us/kb/297019 Note Customers are responsible for both defining and maintaining adequate network and disk I/O. Microsoft will not assist in troubleshooting…

0

Outlook slow opening folders with custom store.

If you are experiencing slow behavior by Outlook, it may be due to crawling.  Crawling in this case refers to when Outlook will go through your folders.  Custom store providers will often run into this issue since they often are providing the ability to store a massive amount of items and crawling kills performance to…

1

How can I Increase WebDAV Performance?

1)   When working with lots of data, first search to get the HREFS of the items, then use the HREFS to work with the individual items.  The batch processing verbs (BPROPFIND, BPROPPATCH, etc) work well with these. -this will usually give much better performance. 2    When at all possible, use of batch methods: BPROPFIND, BPROPATCH,…

1

Getting a delay when doing a WebDAV through a firewall?

If both Basic and Windows authentication is turned-on for the Exchange virtual directory on the Exchange server, and WebDAV code tries to access the Exchange box through a firewall having port 88 blocked, you will get a long delay.    The reason for the delay is that a Basic call will first attempt Anonymous communication…

0