The study was conducted to determine the challenges encountered by students and teachers in using online applications as teaching modalities. Respondents were 23 teachers and 188 students from Palawan State University- Quezon Campus, Palawan, Philippines. Data were analyzed through descriptive statistics such as mean and standard deviation. The data revealed that the primary challenge encountered by most of the students concerning connectivity was poor internet connection. When it comes to accessibility, the main challenge they faced was the struggle of finding additional resources in the internet to help them understand the given learning materials by their professors/ instructors. It was also found out that when it comes to affordability, most of them can afford to buy gadget and load but just wasted a lot of money because the data was not working well. Findings also revealed that when it comes to connectivity, most of the teachers agreed to have problems in coping with unstable internet connection. They moderately agreed to have adaptability struggle and difficulty in explaining the modules online for challenge concerning accessibility. They also agreed to have spent a lot of money in buying load, but the data was not working well as a main challenge they faced for affordability.