Operation Not Valid in Web Access

AppXtender Web Access error "An unexpected error has occurred on the server. Error Message: Operation is not valid due to the current state of the object"

On the Web Access server, please do the following:
1.  Launch Component Registration Wizard
2. Click Next
3.  Choose Web Access Server
4. Click Next twice, then Finish
5. Open Command Line as Administrator
6. Type IISRESET then enter

*Note - this will temporarily disrupt user access, but typically when this error is being received, users cannot access the site**