Peter Ericson’s review published on Letterboxd :
The movie works fairly well as a character drama and a mildly supernatural thriller in which faith is an important element, but because of the rather uninteresting plot and because other ingredients that made the TV series so special are not included, "The X-Files: I Want to Believe" fails to establish much of an "X-Files" atmosphere. David Duchovny and Gillian Anderson are solid as Fox Mulder and Dana Scully, and the chemistry is still there; Billy Connolly gives a very good performance as Father Joseph Crissman. The isolated winter landscape provides the perfect setting for the story. There is a funny scene that involves a photo of George W. Bush and the "X-Files" theme. I hope there will be another "X-Files" movie and that it will return to the alien-conspiracy storyline.
(I was able to watch "The X-Files: I Want to Believe" the day before the Swedish premiere—being one of the projectionists at Lidköping’s movie theater has its perks.)