The windows logins are used throughout our network. They are active directory based. Using a windows login opens up not just access to the sql, but access to anything on...

I have at least one limitation on that. I have to run this as an ad-hoc query. Eventually, this will be a script run by C# codebehind from a webpage...

I cannot download and run procmon on the server containing the excel file due to restrictions in our policies. However, I do agree that the SQL Server Agent login must...

No dice. I added ReadOnly=1, but I ended up with the same error. Our two snippets seem very different though, so I'm not sure how they match up exactly. I...