Try clearing your forms cache. Go to ToolsOptionsOtherAdvanced
OptionsCustom FormsManage Forms Clear Cache.

"Just Me" wrote:

When I send myself a task request from work, the accept and decline buttons
used to be available to use. About a month ago, they the buttons stopped
showing up in a task request. I do not have this same problem when sending a
meeting request. Any help that would solve this issue is much appreciated!