Rabobank will fund the team for the final year of their contract but the company logo and orange and blue colours will be missing from team jerseys. The team must find a new sponsor by the end of 2013 if it is to remain in the sport.
Bike maker Giant will remain a secondary sponsor of the team, Rabobank said.
"We will fulfil all financial obligations to the team in 2013," said Rabobank spokesman Hendrik Jan Eijpe.
"We have had contacts with several companies about taking over the sponsorship but nothing has been settled," he added.
The bank, which spends 15 million euros (£12.2m) annually on cycling sponsorship, said in October that it would no longer support its men's professional team because it was not convinced the sport could guarantee a clean future.
Various initiatives have been announced in recent weeks to reform the sport, but Eijpe said Rabobank was not having second thoughts about dropping out after 17 years.
Armstrong has been stripped of his seven Tour de France titles after the US Anti-Doping Agency said he had taken part in an organised and sophisticated doping scheme on his way to success.
Rabobank has agreed to sponsor its women's team, led by Dutch Olympic champion Marianne Vos, until 2016, and will still back a team of emerging young riders.