Short answers, pulled from the story.
The 42-page summary released on the 13th of November 2014 cleared both Russia and Qatar of any wrongdoing during the bidding for the 2018 and 2022 World Cups. This decision left both nations free to stage their respective tournaments despite evidence suggesting limited document cooperation from Russia.
Michael J. Garcia delivered his 350-page report in September 2014 while Hans-Joachim Eckert announced it would not be made public for legal reasons. Eckert stated he would publish only his judgment on the report in spring 2015 but later claimed the investigation was merely at an interim stage.
Garcia resigned from his role on the 17th of December 2014 after the Appeal Committee dismissed his appeal against the Eckert summary as not admissible. He cited a lack of leadership and lost confidence in Eckert's independence from FIFA following the dismissal.
The investigation targeted former FIFA President João Havelange and Executive Committee member Ricardo Teixeira regarding illegal payments made by International Sports and Leisure between 1992 and 2000. The case also evaluated the behavior of Sepp Blatter regarding the affair and concluded that bribes had been paid to Nicolas Leoz.
FIFA released the full report on the 27th of June 2017 one day after Bild newspaper announced it received a copy intending to publish it. Swiss authorities had previously claimed the report was of little value in June 2015 before the final release occurred years after initial submission.