So far little is known with regard to the impact of the COVID-19 pandemic on changes in psychosocial functioning of middle-aged and older adults across multiple indicators, interindividual differences in these changes, as well as the extent to which pandemic-related changes are temporary or not. We investigate different domains of psychosocial functioning (views on aging: attitude toward own aging [ATOA] and subjective age; subjective well-being: life satisfaction and depressive symptoms; health: self-rated health) across up to 7 years (prepandemic measurement occasions: 2014 and 2017; peri-pandemic measurement occasions: Summer 2020 and Winter 2020/2021) among middle-aged and older adults ( = 10,856; in 2014 = 64.3 years, = 11.58), based on data of the German Ageing Survey. Longitudinal multilevel regression models revealed that mean-level change toward more negative ATOA over time was aggravated by an additional shift toward more pessimistic ATOA in Summer 2020. In contrast, the mean-level change toward older subjective ages over time was interrupted by a shift toward younger subjective ages in Summer 2020. This shift was more pronounced among chronologically younger individuals. Depressive symptoms remained on average stable over time, but there was a temporary increase in Summer 2020. No pandemic-related change was observed for life satisfaction and self-rated health. Our findings suggest that different psychosocial functioning indicators reveal a different susceptibility to "COVID-19 effects," but all changes were temporary, potentially reflecting processes of adaptation. We discuss our results in the context of established theories, such as socioemotional selectivity theory or set-point theory of well-being. (PsycInfo Database Record (c) 2023 APA, all rights reserved).