Updatable help brings the benefit of up to date help with typos fixed and new edge cases described. The down side is that it sometimes fails:
PS> Update-Help -Force
Update-Help : Failed to update Help for the module(s) ‘Microsoft.PowerShell.Operation.Validation’
with UI culture(s) {en-GB} : Unable to retrieve the HelpInfo XML file for UI culture en-GB. Make sure the HelpInfoUri property in the module manifest is valid or check your network connection and then try the command again.
At line:1 char:1
+ Update-Help -Force
+ ~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ResourceUnavailable: (:) [Update-Help], Exception
+ FullyQualifiedErrorId : UnableToRetrieveHelpInfoXml,Microsoft.PowerShell.Commands.UpdateHelpCo
mmand
Update-Help : Failed to update Help for the module(s) ‘PSScriptAnalyzer’ with UI culture(s) {en-US} : The Help content at the specified location is not valid. Specify a location that contains valid Help Content.
At line:1 char:1
+ Update-Help -Force
+ ~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Update-Help], Exception
+ FullyQualifiedErrorId : HelpContentXmlValidationFailure,Microsoft.PowerShell.Commands.UpdateHe
lpCommand
The failure messages are relatively self-explanatory if you read the details. The problem usually boils down to the needed help files not being available at the URI provided in the module manifest. This often occurs with new modules – the creation of the help files lags well behind the creation of the module usually.
Unfortunately there isn’t much you can do apart from try to find examples of the modules use online