Deep dive:Exchange Online PowerShell and MFA

When you read the headline, you’re might thinking “Oh no! Another post about this topic!”. But I think this post is worth reading as I’ll go deep into details.

Over the last months I have seen an increase of questions from various teammates and other teams in regards of the Exchange Online Remote PowerShell Module. The questions where mostly related to connectivity issue and prompts for re-authentication as PSSessions got into a broken state.

Also the fact that in some areas a proxy needs to be used, might be confusing as well as the question what to do if you have a service account or want to use the module in ISE.

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Get-IISStats: Updated version available

Over the last months a lot of changes needed to be addressed. The script was intended to extract data from the IIS logs. With PowerShell in combination with LogParser it did a great job. But different versions of Exchange, changed infrastructure and multiple versions of Exchange ActiveSync protocol demanded an update to fulfill these needs.

The latest version focused on code improvement and added support for the new version of Exchange ActiveSync protocol v16.1 .

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Troubleshooting Exchange with LogParser: EWS logs

When it comes to the point to troubleshoot Exchange Web Services related issues, where do you start? When it’s related to F/B requests of Outlook there used to be some client-side logs available. Since Office 2013 not anymore, as these data are all moved into ETL files, which are encrypted. It can be also hard to troubleshoot a Mac client or even cross-org or Hybrid scenarios.

So how can you start troubleshooting?

Starting with Exchange 2010 you will find EWS related logs on the servers and you can easily parse them. The newer the Exchange version is the more information is logged.

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PowerShell and bit field attributes

A while ago I wrote a script, which helps me troubleshooting calendar issues:

Troubleshooting calendar items

Lately I wanted to improve the script and needed to translate two properties. These properties reflect what action a user has taken on and how a meeting object has changed:

Both properties are specified by a bit field.

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