Ain't this a bitch? I spent hours downloading this f*cking f.. (OnlyFans)

Ain't this a bitch? I spent hours downloading this f*cking footage, only to have to GD-ed program tell me Windows can't open it. I can't STAND this sh*t. The New York office sent me the file in MAC format. My PC can't open it. Little help out there? I've got 6GB file on my external hard drive and I can't use it.