Unable to select multi-valued options in SSRS 2008 R2 subscription

Question

Decision:

Wow .. just found a problem and the answer to my question below. They were related to compatibility settings in IE 9. As soon as I added the URL of the report server to the compatibility websites, everything started working fine. I will leave this post here in StackOverflow in case anyone else runs into this problem.

Thanks anyway, and I appreciate all the answers I have found on this site over the years!

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Original post:

I created several reports in SSRS 2008 R2 that use multi-valued parameters. They all work correctly when the report is run directly, but when I try to configure a subscription to reports (standard, not even data-driven), I can’t select any of the multi-valued options. I have done extensive research that does not indicate that multi-valued options are not supported in SSRS 2008 R2 subscriptions, so I wonder if anyone else came across this problem and how they fixed it. (If someone knows otherwise and that multi-valued options are not supported in subscriptions, say so!)

One page I found on the web suggested a possible damaged ReportingServices.js file. I did not modify my file at all, so I solve it (if this is not possible, since the file can be changed in some other way?).

I created a new blank report with two simple parameters for testing, and the same problem still exists. My SingleValueInteger1 has a combobox drop-down menu that works fine in a subscription, but my MultiValueInteger1 shows a drop-down arrow, hangs over it, shows the text "Specify one or more default values", but when I click on the arrow the field does not expand, allowing me to select or even review any available parameter values. Both of these options have "Allow null value" that are not checked, both use "Specify Values" in the "Available Values" section (not using "Get Values ​​from Query" to simplify this example), as well as default values.

I tried to include illustrations with this post, but this is my first post and I do not have "at least 10 rep."

Thanks in advance for any suggestions or help. I spent countless hours trying to figure it out!