I am getting this error and not being able to create a new sharepoint connection, the workflow is failing on the server as well.
As a workaround I did try installing newer version of sharepoint tools and deleting old ones, still not able to get through.
Deserialization of DCM schema 'DataSource/database-bulk-redshift-aws' at filesystem location 'C:\Program Files\Alteryx\bin\RuntimeData\DcmSchemas\DataSources\database-bulk-redshift-aws.json' has failed. Try to re-install used plugin or contact Customer Support.
