Murray was playing in his first ATP Tour-level event since rupturing ankle ligaments at the Miami Open in March
Andy Murray missed the opportunity to play long-time rival Novak Djokovic as Yannick Hanfmann quickly wrapped up victory against the Briton in the Geneva Open first round.
Former world number one Murray was trailing 7-5 4-1 on Monday when play was suspended because of bizarre weather conditions.
Rain started to fall during the match and gusts of wind blew white pollen on to the court, with play cancelled for the day shortly after.
The 37-year-old Scot was unable to turn around the match when it resumed on Tuesday as Germany's Hanfmann twice held serve to complete victory and now plays world number one Djokovic in the second round.
There was also defeat in Geneva for Jack Draper, with the eighth seed and world number 40, losing 7-6 (8-6) 6-1 to Czech Tomas Machac.
Wildcard Murray was playing his first ATP Tour-level match since rupturing ankle ligaments at the Miami Open in March.
Last week, Murray made his return at a clay-court ATP Challenger event in Bordeaux after rupturing ankle ligaments in March, but was knocked out in the second round by Frenchman Gregoire Barrere.
The three-time Grand Slam champion has previously said he does not plan to "play much past this summer", but has not announced where his final tournament will be.
Murray, who is ranked 75th in the world, is set to play at the French Open next week for what is expected to be the final time.
The second major of the season starts on 26 May.
"It's like it's snowing out here and you still want us to keep playing," Murray argued with umpire Greg Allensworth before it was decided the players should return to the locker room.
There was also defeat in Geneva for fellow Briton Jack Draper, with the eighth seed and world number 40 losing 7-6 (8-6) 6-1 to Czech Tomas Machac.
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