rakhesh sasidharan's mostly techie somewhat purpley blog

I am usually more planned than this, but today I was distracted while on a call and doing some housekeeping on my Hybrid Runbook Workers side by side. I decided to update the Az modules, coz why not.

Update-Module Az

1	Update-Module Az

That broke all my Runbooks with the following error:

Method 'get_SerializationSettings' in type 'Microsoft.Azure.Management.Internal.Resources.ResourceManagementClient' from assembly 'Microsoft.Azure.PowerShell.Clients.ResourceManager, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.

1	Method 'get_SerializationSettings' in type 'Microsoft.Azure.Management.Internal.Resources.ResourceManagementClient' from assembly 'Microsoft.Azure.PowerShell.Clients.ResourceManager, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.

😡

I tried removing the Az module and installed the previous one in the gallery:

Uninstall-Module Az
Install-Module Az -RequiredVersion "10.0.0"

1 2	Uninstall-Module Az Install-Module Az -RequiredVersion "10.0.0"

But that didn’t help. I wish I had noted the previous version of the module! Heck, that’s something I should be mindful of going forward. Unlike the Graph, PnP.PowerShell, or ExchangeOnlineManagement modules whose versions I am mindful of, with the Az modules I just update periodically. Never bit me in the a$$ so far.

Luckily I had a second machine I was using as HRW and I know that works fine.

So I did the following on that machine:

foreach ($entry in (Get-InstalledModule | Where-Object { $_.Name -match "^Az" })) {
	"$($entry.Name),$($entry.Version)" | Out-Files .\azlist.txt -Append
}

foreach ($entry in (Get-InstalledModule | Where-Object { $_.Name -match "^Az" })) {

"$($entry.Name),$($entry.Version)" | Out-Files .\azlist.txt -Append

}

This outputs the modules and their versions. I am capturing the info for all the Az.* modules as they all depend on each other. Initially I tried just uninstalling the main Az module and installing the specific version of that but it didn’t help. (Could be I was doing something wrong and this roundabout way is not needed).

Then on the broken machine I did:

$hashTable = @{}
# Cache the existing versions beforehand to speed things up
foreach ($module in Get-InstalledModule) {
	$hashTable[$module.Name] = $module.Version
}

Get-Content .\azlist.txt | ForEach-Object {
	$module = ($_ -split ',')[0]
	$version = ($_ -split ',')[1]

	Write-Host "Processing $module"

	$installedVersion = $hashTable[$module]
	if ($installedVersion -ne $version) {
		Write-Host "Uninstalling $module"
		Uninstall-Module -Name $module -Force
		Write-Host "Installing $module version $version"
		Install-Module -Name $module -RequiredVersion $version
	
	}
}

$hashTable = @{}

# Cache the existing versions beforehand to speed things up

foreach ($module in Get-InstalledModule) {

$hashTable[$module.Name] = $module.Version

}

Get-Content .\azlist.txt | ForEach-Object {

$module = ($_ -split ',')[0]

$version = ($_ -split ',')[1]

Write-Host "Processing $module"

$installedVersion = $hashTable[$module]

if ($installedVersion -ne $version) {

Write-Host "Uninstalling $module"

Uninstall-Module -Name $module -Force

Write-Host "Installing $module version $version"

Install-Module -Name $module -RequiredVersion $version

}

Took a while but finally it was done. Now the Runbooks are happy.