Can't perform UDP scan on Windows platform

["Kurt Buff - GSEC, GCIH" <kurt.buff () gmail com>]

I'm hoping this is a good list for this query - if not, please direct
me elsewhere. I prefer emails lists to forums, if that makes a
difference.

I tried to do a scan against a device from a machine on the same
subnet. The device being scanned has two IP addresses, so the scan
command line was in this form:
nmap -sS -sU -T4 -A -v x.y.z.20-21

I've tried it through Zenmap, selecting "Intense scan plus UDP", and
also through a command prompt..

The machine running Zenmap/nmap is Win10 1709, fully patched, running
nmap 7.7 with npcap 0.99-r2. I was logged on with an administrative
account, and elevated the session - I get the same results when logged
in as a non-privileged user and elevate Zenmap.

I got results for TCP, but none for UDP, and the set of errors shown below.

NSOCK ERROR [6586.0130s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #6): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6587.5820s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #10): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6587.9390s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #11): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6589.1590s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #13): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6590.6320s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #15): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6592.2880s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #16): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6609.9550s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #84): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6618.7000s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #105): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6627.1680s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #151): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6628.8290s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #153): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6629.6960s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #155): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6630.2370s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #156): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6631.3550s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #157): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6661.6120s] mksock_bind_addr(): Bind to 0.0.0.0:161
failed (IOD #187): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6718.1120s] mksock_bind_addr(): Bind to 0.0.0.0:123
failed (IOD #1330): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6724.2880s] mksock_bind_addr(): Bind to 0.0.0.0:123
failed (IOD #1447): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6735.5170s] mksock_bind_addr(): Bind to 0.0.0.0:161
failed (IOD #1681): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6737.5560s] mksock_bind_addr(): Bind to 0.0.0.0:161
failed (IOD #1730): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6738.5710s] mksock_bind_addr(): Bind to 0.0.0.0:123
failed (IOD #1741): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)
NSOCK ERROR [6752.8710s] mksock_bind_addr(): Bind to 0.0.0.0:500
failed (IOD #2040): An attempt was made to access a socket in a way
forbidden by its access permissions.  (10013)

I've done a fair amount of STFW, but what I've found WRT the error has
either not be relevant, or hasn't remedied the problem.

Any suggestions appreciated.

Kurt
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