{"id":18928,"date":"2021-03-11T07:29:00","date_gmt":"2021-03-11T15:29:00","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/powershell\/?p=18928"},"modified":"2022-07-21T14:54:28","modified_gmt":"2022-07-21T22:54:28","slug":"updating-help-for-the-psreadline-module-in-windows-powershell-5-1","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/powershell\/updating-help-for-the-psreadline-module-in-windows-powershell-5-1\/","title":{"rendered":"Updating help for the PSReadLine module in Windows PowerShell 5.1"},"content":{"rendered":"

The version of the PSReadline<\/strong> module that shipped in Windows PowerShell 5.1 used a lowercase letter in the name. The name of the module was changed for the release of PowerShell 6. It now uses a capital L<\/code> in the name.<\/p>\n

\"Error<\/p>\n

In the example above, I am trying to update help for the PSReadLine<\/strong> module on my Windows computer. Take a close look at the error message. Notice the spelling of the module name in the message:<\/p>\n

Failed to update Help for the module(s) ‘PSReadline<\/strong>‘<\/p><\/blockquote>\n

In PowerShell 6 and higher, the PSReadLine<\/strong> module is spelled with a capital L<\/code><\/strong> character. But the error message is using a lowercase letter.<\/p>\n

The root cause of the error<\/h2>\n

The problem comes from Windows PowerShell 5.1. The version of the PSReadline<\/strong> module that shipped in Windows PowerShell 5.1 used a lowercase letter in the name. The name of the module was changed for the release of PowerShell 6. It now uses a capital L<\/code> in the name.<\/p>\n

The Update-Help<\/code> cmdlet constructs the URL of the CAB file containing the updated help. The URL path is case-sensitive. The updated help files use the new name with the capital L<\/code>. PowerShell 6 and higher is installed side-by-side with Windows PowerShell. When you run Update-Help<\/code>, the cmdlet attempts to update the help for both versions of PowerShell. The name of the module that Update-Help<\/code> uses is based on the name of the folder where the help is stored. For Windows PowerShell this is C:\\Program Files\\WindowsPowerShell\\Modules\\PSReadline<\/code>.<\/p>\n

Note that only the update of help for the Windows PowerShell location is failing.<\/p>\n

How to fix this problem<\/h2>\n

Fortunately the fix is simple. Just rename the folder to C:\\Program Files\\WindowsPowerShell\\Modules\\PSReadLine<\/code>. To rename this folder, you must be sure to close all Windows PowerShell sessions to release any open file handles on the directory. If you try to rename the folder from the PowerShell command line, you receive the following error message.<\/p>\n

Rename-Item: Source and destination path must be different.<\/code><\/p><\/blockquote>\n

There are two simple ways to rename the folder.<\/p>\n