ZURICH, April 3 (Reuters) - The board of SoftwareOne Holding has been backed by proxy adviser Glass Lewis over the Swiss IT service company's fight with its founding shareholders.

Glass Lewis has recommended shareholders re-elect all the existing members of the company's board, contrary to the wishes of founding shareholders who had previously wanted to sell the company to Bain Capital.

The board members will all come up for re-election at the company's upcoming shareholder meeting due to be held on April 18. (Reporting by Oliver Hirt and John Revill Editing by Mark Potter)