If you’re installing Team Foundation Server 2010 and you run into error TF255352 you might have a problem with your firewall.
Here’s the text of the message:
Permissions could not be verified because an error occurred while communicating with the following report server: [my server]
And also, in a second warning:
The server returned the following error: The report server cannot open a connection to the report server database. A connection to the database is required for all requests and processing.
I missed a step in the install guide (how can you not…it’s just under four billion pages hehehe) and didn’t configure my firewall. After adding the required port exceptions, I reran the pre-check, got all green lights, and installation continued as planned.