How to copy a missing Site collection feature from one site to another site

Question

I'm using SharePoint 2016 On- premises server.

From site collection ( Farm A) I've saved a site as a site template and uploaded the file in the solutions of site collection (Farm B), and activated it. Now I wanted to create a new sub-site using that activated solution. While doing so I'm getting errors mentioning that those features are not activated and hence I can't create a site.

On analyzing the error, I've activated the some features and reduced the error count,

Finally, I can't clear one error, because that one feature is not listed in the site collection(Farm B) features.

To solve the issue, I need to copy (from Farm A) and paste (to Farm B) the same site collection feature.

Please suggest a way to copy the feature from one site to another.

Error while creating the sub -site :

Answer 1

You can find the MissingFeature in Farm A under this location (for CompatibilityLevel 15)

%Program Files%\Common Files\microsoft shared\Web Server Extensions\15\TEMPLATE\FEATURES\<FeatureName>

Copy this folder to the corresponding path in Farm B, then install the missing feature in Farm B by executing

Install-SPFeature -path "<MissingFeature>"  -CompatibilityLevel 15

Check the status of the feature by executing

Get-SPFeature -Identity "<MissingFeature>"

Reference: Install-SPFeature. Get-SPFeature.

Answer 2

You can get the problematic feature details from the site collection A using the below command:

Get-SPFeature | Where {$_.DisplayName -eq "FeatureName"} | Select ID

Then activate that feature in Site Collection B using the below command:

Enable-SPFeature –Identity "FeatureName" –url http://YourSiteCollection-B-URL

Then, create the subsite using the custom template from Site Collection - B.

Modified Answer:

If you have custom features in installed in your dev server - you can export those solutions using the below script:

$dirName = "c:\Solutions"
foreach ($solution in Get-SPSolution)
{
    $id = $Solution.SolutionID
    $title = $Solution.Name
    $filename = $Solution.SolutionFile.Name
    $solution.SolutionFile.SaveAs("$dirName\$filename")
}

Source:

Export all Farm Solutions (WSP) from central admin with PowerShell in SharePoint:

Then - verify your "Web Server Extensions\15\TEMPLATE\FEATURES\" with the wsp name in your dev server - then deploy your all downloaded WSP solution to the prod server - then activate the feature in your site collection - Finally verify the "Web Server Extensions\15\TEMPLATE\FEATURES\" both in dev and prod server - if both are same, you are good to go.