Hello! Per Google's Speed Test, they say I need to set an expiration date for all of my pictures, and the best way to do that is to go into IIS 7 and set common http response headers. I'm trying to set everything to expire every 45 days. When I do this, it says:
"There was an error while performing this operation"
"Details:"
"Lock Violation"
My website is hosted by discountasp.net, so it's shared hosting. Any guidance in this regard to help me set the common http response headers would be greatly appreciated!
If it helps, here's a screenshot of my IIS7 and the error:
Jason Weber