powershell

PowerShellBlack

06 Jan: PowerShell Modules I worked on in 2019

It’s year 2020 and 365 days passed since my last year blog post about PowerShell modules I worked on in 2018. I thought it would be a good occasion to review what happened and how things changed during that time. When I wrote the last blog post in the first days of 2019, my PowerShell modules were downloaded just a bit over 15000 times. Fast Forward today, and the counter is at 280000 times spread over 40 modules. Of course, not all those modules are equal. In 2019 I created multiple new PowerShell modules, but some modules were archived, while others were migrated back to their “parents”. Just to see how my community road was going in the last years I decided to check some statistics.
PSWritePDF

29 Dec: Merging, splitting and creating PDF files with PowerShell

We’re in the last days of 2019, and this will be my last blog post this year. What better way to end a good year than with the release of the new PowerShell module. If the title of today’s blog post isn’t giving it up yet, I wanted to share a PowerShell module called PSWritePDF that can help you create and modify (split/merge) PDF documents. It joins my other PowerShell modules to create different types of documents such as PSWriteWord, PSWriteExcel, PSWriteHTML. I know that PSWriteExcel is relatively basic, but both PSWriteHTML and PSWriteWord deliver robust build capabilities.
PSTeams

22 Dec: Sending Messages to Microsoft Teams from PowerShell just got easier and better

Christmas time is upon us, and I’ve decided that my PSTeams module needs some love. I wrote it in late 2018 and updated it a few times at the beginning of 2019. This release hopefully is worth of having 1.0 version number. I don’t do that often and usually go for build numbers changes only, but Microsoft Teams message cards have their limits on functionality. Therefore, there are not many things that can be added unless Microsoft opens up and gives us all the cool features of Adaptive Cards. PSTeams module uses Webconnector to send messages to Teams. That method only supports Message Cards, which even Microsoft calls Legacy. But legacy doesn’t mean fully functional with some cool features of their own. If you’re new to PSTeams you may want to read those 2 posts below to get information how to set it up.
Invoke-RestMethod Error

14 Dec: Invoke-RestMethod : The underlying connection was closed: An unexpected error occurred on a send while connecting Graph API

In the last few days, I’ve got two reports that my PowerShell module for Office 365 Health suddenly started giving errors. This was a bit weird because it worked perfectly fine on my end. But while I could understand one person having an issue of their own, with their network or firewalls, if the second person comes along with the same report, that means something else is going on.
Azure Health

08 Dec: Getting Azure Health by parsing HTML using PSParseHTML

Some time ago I’ve wrote PowerShell way to get all information about Office 365 Service Health, and if you were thinking that I would try the same concept for Azure Services you were right. However, I failed. This is because Office 365 Health can be gathered using Microsoft Graph API, and Azure Health information, as far as I know, is not available in the form I wanted it. Azure Status is available as part of Azure Status website. Contrary to Office 365 health you don’t have to login to your Office 365 tenant to read it.
img_5de637d350b78

05 Dec: Microsoft Graph – InvalidAuthenticationToken – Access token validation failure. Invalid audience

Today I had a need to connect to Microsoft Graph and do some tasks on Office 365. Since I have already done similar stuff for my PSwinDocumentation.O365HealthService PowerShell module that I’ve described in PowerShell to get all information about Office 365 Service Health, I thought this will be easy run as I’ll just reuse the code I’ve done for that module. As always for Graph related tasks you need to register your application and assign correct permissions. I’ve used my own article for that with changes to which API I want to access. Now that I’ve done all that I’ve extracted my Connect-O365Graph function from my module and started connecting.
CodeADSI

17 Nov: Removing user from local administrator group based on data stored in Active Directory

We need to deal with a group names through SID’s rather than names because each group name is different in different languages. The second problem is to distinguish whether a user is a local or domain user. Finally, I need to connect to Active Directory to verify if the user I am about to remove has ExtensionAttribute10 (or any other field in AD) filled in or not.
Add-LocalUserToGroup

30 Oct: Create a local user or administrator account in Windows using PowerShell

Recently I got a simple task to implement LAPS for the newly created local user instead of using the built-in local administrator account. It seemed easy at first. Go to Group Policies, create a new user, add it to an administrators group, and then follow standard steps to implement LAPS. That is until you find out it’s actually not possible anymore due to password encryption key being available in the wild, which made Microsoft block that Group Policy Preference. While that road is blocked, I still need to get my user-created somehow. Let’s do it with PowerShell. It’s quite simple – use New-LocalUser a few parameters, some random password that I don’t need to save as LAPS will overwrite it. Except it’s not available on PowerShell 2.0, which is the default for Windows 7 that I have to support. Things get even more complicated if you consider that Administrators group is called differently in different countries. While I stopped supporting anything below PowerShell 5.1, I can’t say if it’s the project requirement.