Denise Plumpton, chairwoman of the user group, which represents more than 140 IT directors from Europe's largest firms, said she would continue the campaign to improve software quality.
"Users face larger overheads through constantly maintaining software and applying patches and service packs," said Plumpton, a former IT director at utility company Powergen and logistics company TNT UK.
"A recurrent theme from our members is that they do not trust patches to work without side effects or software suppliers to deliver something they can push straight out. Suppliers need to be called to account for producing sub-standard software."
Plumpton said Tif was keen to work in partnership with suppliers on the issue.