We're trying to follow the MS doc to enable Adobe's PDF iFilter 11 on our SharePoint Server 2016 farm.
https://docs.microsoft.com/en-us/sharepoint/troubleshoot/lists-and-libraries/ifilter-alternative-to-...
However, the associated commands fail for us:
$ssa = Get-SPEnterpriseSearchServiceApplication -Identity "Search Service Application"
Set-SPEnterpriseSearchFileFormatState -SearchApplication $ssa -Identity PDF -Enable $true -UseIFilter $true
Even just trying to disable the built-in PDF parser results in the same error:
Set-SPEnterpriseSearchFileFormatState -SearchApplication $ssa pdf -Enable $false
The error being thrown is:
"Set-SPEnterpriseSearchFileFormatState : The processing of files of type 'pdf' is already supported by the parsing system."
If we run:
Get-SPEnterpriseSearchFileFormat -SearchApplication $ssa pdf
We get back:
Identity : pdf
Name : PDF
MimeType : application/pdf
Extension : .pdf
BuiltIn : True
Enabled : True
UseIFilter : False
This appears to be an issue on SharePoint Server Subscription Edition as well according to other users:
https://techcommunity.microsoft.com/t5/sharepoint-server-subscription/set-spenterprisesearchfileform...
