VSTS deploy Azure function error: 4294967295 - azure

Question

I'm using VSTS to deploy an Azure Function. I started getting some errors during the deployment from yesterday morning.
The error code is 4294967295, usually related to a locked folder but the error message says The user name or password is incorrect, so I'm a little confused.
2018-01-28T08:31:58.6556754Z ##[error]Failed to deploy web package to App Service.
2018-01-28T08:31:58.6568081Z ##[error]Error: (1/28/2018 8:31:58 AM) An error occurred when the request was processed on the remote computer.
Error: The user name or password is incorrect.
at Microsoft.Web.Deployment.NativeMethods.RaiseIOExceptionFromErrorCode(Win32ErrorCode errorCode, String maybeFullPath)
at Microsoft.Web.Deployment.DirectoryEx.CreateDirectory(String path)
at Microsoft.Web.Deployment.DirectoryEx.CreateDirectoriesFromRoot(String path)
at Microsoft.Web.Deployment.AppOfflineRuleHandler.AddAppOfflineFilesToEachApp(DeploymentBaseContext baseContext, Boolean whatIf)
at Microsoft.Web.Deployment.AppOfflineRuleHandler.Add(DeploymentSyncContext syncContext, DeploymentObject destinationObject, DeploymentObject& sourceObject, Boolean& proceed)
at Microsoft.Web.Deployment.DeploymentSyncContext.HandleAdd(DeploymentObject destObject, DeploymentObject sourceObject)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildren(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildrenNoOrder(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildren(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildrenOrder(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.SyncChildren(DeploymentObject dest, DeploymentObject source)
at Microsoft.Web.Deployment.DeploymentSyncContext.ProcessSync(DeploymentObject destinationObject, DeploymentObject sourceObject)
at Microsoft.Web.Deployment.DeploymentObject.SyncToInternal(DeploymentObject destObject, DeploymentSyncOptions syncOptions, PayloadTable payloadTable, ContentRootTable contentRootTable, Nullable1 syncPassId, String syncSessionId)
at Microsoft.Web.Deployment.DeploymentAgent.HandleSync(DeploymentAgentAsyncData asyncData, Nullable1 passId, String user, String siteName)
Error count: 1.
2018-01-28T08:31:58.6575553Z ##[error]Error: C:\Program Files\IIS\Microsoft Web Deploy V3\msdeploy.exe failed with return code: 4294967295

Answer 1

Based on your log, the Package or folder option for Azure App Service Deploy task is too broad. It matches more than one .zip files.
In the log, it matches two zip files:
d:\a\r1\a\Stamp BigBro\drop\HeartbeatMonitor.zip
d:\a\r1\a\temp_web_package_08951874997805498.zip
And the d:\a\r1\a\temp_web_package_08951874997805498.zip file(apparently it’s not as expected) is treated as package in msdeploy cli.
So you should change the Package or folder option to make sure it can only much the HeartbeatMonitor.zip fie. Such as any of below formats can work:
$(System.DefaultWorkingDirectory)\**\HeartbeatMonitor.zip
$(System.DefaultWorkingDirectory)\Stamp BigBro\drop\HeartbeatMonitor.zip