Error trying to contact resources on Posit Connect from local workstation

[dvetsch75]

I am having two issues that I think are related. I have a plumber API deployed to Posit Connect that works fine when I test it using the Swagger UI, but when I try to hit the API locally using Curl, I get the following error:

curl -X GET "https://<my app URL>/content/1276dd5b-f16d-4cb2-a40f-48c714db31fa/spline?xs=1%2C%202%2C%203%2C%204&ys=0.5%2C%200.7%2C%202%2C%204.1&at=1.8" -H "accept: application/json
curl: (35) schannel: next InitializeSecurityContext failed: SEC_E_UNSUPPORTED_FUNCTION (0x80090302) - The function requested is not supported

On a related note, when I try to deploy shiny apps to Posit Connect from my local machine, I get the following error (some identifying data redacted):

Set RETICULATE_PYTHON_FALLBACK = "C:/Anaconda3/python.exe"
[2023-08-30 11:20:23] Deployment log started
Deploy command: 
 rsconnect::deployApp(appDir = "~/Work/Sandbox/local_rsconnect_deploy",      appFileManifest = "C:/Users/maa98/AppData/Local/Temp/d94b-b9e5-86bd-0f42",      account = "MAA98", server = "rhlrconnectp01.mmacct.root.mds",      appName = "local_rsconnect_deploy", appTitle = "local_rsconnect_deploy",      launch.browser = function(url) {         message("Deployment completed: ", url)     }, lint = FALSE, metadata = list(asMultiple = FALSE, asStatic = FALSE),      logLevel = "verbose") 

Session information: 
R version 4.1.3 (2022-03-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19044)

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] compiler_4.1.3    cli_3.6.1         rsconnect_1.0.2   tools_4.1.3      
[5] rstudioapi_0.15.0 lifecycle_1.0.3   rlang_1.1.1      
-- Preparing for deployment ----------------------------------------------------
----- Deployment error -----
Error in curl::curl_fetch_memory(url, handle = handle) : 
  schannel: next InitializeSecurityContext failed: SEC_E_UNSUPPORTED_FUNCTION (0x80090302) - The function requested is not supported
Calls: <Anonymous> ... listApplicationsRequest -> GET -> httpRequest -> http -> <Anonymous>
 
----- Error stack trace -----
10: rsconnect::deployApp(appDir = "~/Work/Sandbox/local_rsconnect_deploy", 
        appFileManifest = "C:/Users/maa98/AppData/Local/Temp/d94b-b9e5-86bd-0f42", 
        account = "MAA98", server = <enterprise server name>, 
     ...
9: deploymentTarget(recordPath = recordPath, appId = appId, appName = appName, 
       appTitle = appTitle, envVars = envVars, account = account, 
       server = server, forceUpdate = forceUpdate)
8: applications(fullAccount$name, fullAccount$server)
7: client$listApplications(accountDetails$accountId)
6: listApplicationsRequest(service, authInfo, path, query, "applications")
5: GET(service, authInfo, path, queryWithList)
4: httpRequest(service, authInfo, "GET", path, query, headers, timeout)
3: http(protocol = service$protocol, host = service$host, port = service$port, 
       method = method, path = path, headers = headers, timeout = timeout, 
       certificate = certificate)
2: curl::curl_fetch_memory(url, handle = handle)
1: (function (e) 
   {
       cat("----- Deployment error -----\n")
    ...
Error in curl::curl_fetch_memory(url, handle = handle) : 
  schannel: next InitializeSecurityContext failed: SEC_E_UNSUPPORTED_FUNCTION (0x80090302) - The function requested is not supported
Calls: <Anonymous> ... listApplicationsRequest -> GET -> httpRequest -> http -> <Anonymous>
Execution halted

So, how do I resolve these issues? Is this something my admin needs to take care of?