Unable to Download Metadata

When I try to download metadata on my Windows 10 system I keep getting error messages. Here are the details of the problem:

calibre, version 3.33.1
ERROR: Download failed: Failed to download metadata. Click Show Details to see details

Traceback (most recent call last):
File "site-packages\calibre\gui2\metadata\single_download.py" , line 424, in run
File "site-packages\calibre\utils\ipc\simple_worker.py", line 224, in fork_job
File "site-packages\calibre\utils\ipc\simple_worker.py", line 138, in create_worker
File "site-packages\calibre\utils\ipc\launch.py", line 228, in __call__
File "subprocess.py", line 711, in __init__
File "subprocess.py", line 959, in _execute_child
WindowsError: [Error 5] Access is denied