How to fix: An unhandled exception occurred while processing the request.

Win32Exception: The wait operation timed out.

Unknown location

SqlException: Execution Timeout Expired.

Solution:

in file  ... \Program.cs add below lines

builder.Services.AddDbContext(options =>
{
// options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection"));

options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection"),op=>op.CommandTimeout(999));
});