"UPS Service is currently unavailable" error in checkout

How is this resolved for nop 4.2 and greater?  There is no setting in config to change the url.  I downloaded the latest ups plugin and still having same issue.  For 4.2 does this require modiying the code for Nop.Plugin.Shipping.UPS.dll and recompiling ?  thanks for any help

"UPS Service is currently unavailable" could be temporary.  Are you still having the problem?

New York wrote:

Thanks for your response...
This started about 4 days ago.  Error is:
Error while getting UPS rates One or more errors occurred. (Could not establish trust relationship for the SSL/TLS secure channel with authority 'onlinetools.ups.com'.)

Pretty sure this is related them taking down that url.  We didn't know they were retiring the url until we started researching this today.

https://www.nopcommerce.com/en/boards/topic/43226/ups-shipping-plugin-error-the-request-was-aborted-could-not-create-ssltls-secure-channel-ncver37/page/2#289482

That took care of it, thank you so much for the link!  However, to note for anyone else having this issue - I tried using IISCrypto to modify the ciphers (adding the new required ones) and prioritized them.  However this did not work for some reason (server 2012 R2) after rebooting.  I had to add the new ciphers to the registry manually.  I didn't have to prioritize them however, just adding the new ciphers fixed the issue after reboot for me.  Specifically I just added the following new ciphers named in that link (had to add the needed suffixes _Pxxx, etc) to the registry key at:  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Cryptography\Configuration\Local\SSL\00010002

TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384_P384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384_P256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256_P384
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256_P256

Thanks again