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Hi experts

We are getting a problem with some remote users (not on the network) who are able to open the EPM web interfact but when they try to load a schedule they are faced with the below.

After about a minute, a blank excel sheet appears.

I am about to Open > Server Report to see all of the reports but when I try to open a report or schedule I get the same error as above.

Has anyone got any ideas where I might be able to start looking? We have 5 or 6 people with this problem.

All running EPM 10 SP 13.

Thanks

Ian