While literature on language assessment continue to highlight various issues, the running of university English courses particularly their assessments components are put to the test during the Covid-19 pandemic where the shift to online mode from the previously conventional method becomes inevitable. Due to this n e w circumstance, this paper aims to explore the challenges faced by English lecturers in delivering online language assessments and the strategies they undertook for mitigation. Qualitative data was elicited from twenty one key language lecturers as purposive samples from eleven public universities. Based on basic Delphi method, they were grouped according to three expertise domains namely online language learning, language curriculum and pedagogy. The expert respondents provided views to structured written interview questions as well as follow-up oral interviews. Emerging themes from the responses point towards ten challenges that form four categories of issues namely ICT infrastructure, lecturers' online assessment literacy, language learners' commitment and integrity and the need for specific online language assessment guidelines. The expert consensus also indicate that formulation of specific online language assessment guidelines is necessary to ensure educational best practices are upheld for effective attainment of course and programme outcomes..