# "Unable to create an instance" error when installing WorkflowGen Windows Services

**URL:** <https://discuss.workflowgen.com/t/unable-to-create-an-instance-error-when-installing-workflowgen-windows-services/141>\
**Category:** Installation\
**Created:** [May 25, 2016, 9:42pm UTC](https://discuss.workflowgen.com/t/unable-to-create-an-instance-error-when-installing-workflowgen-windows-services/141 "2016-05-25T21:42:44Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![wfg-admin](https://yyz2.discourse-cdn.com/flex030/user_avatar/discuss.workflowgen.com/wfg-admin/32/714_2.png) [@wfg-admin](https://discuss.workflowgen.com/u/wfg-admin)\
**Post date:** [May 25, 2016, 9:42pm UTC](https://discuss.workflowgen.com/t/unable-to-create-an-instance-error-when-installing-workflowgen-windows-services/141/1 "2016-05-25T21:42:44Z")

</div>

When installing WorkflowGen Windows Services, after running `DRIVE:\Program Files\Advantys\WorkflowGen\Services\bin\winsvc-install.cmd`, you might receive the following error message:

`Unable to create an instance of the Advantys.Directories.Win.Services.SynchronizationService.SynchronizationServiceInstaller installer type.`

This is because the installation must be performed with Administrator privileges. Install it again by right-clicking `winsvc-install.cmd` and choosing **Run as administrator**.