[BUG]: AzureAppServiceManage@0 fails Error: 'subscriptionId' cannot be null.

### New issue checklist

- [x] I searched for [existing GitHub issues](https://github.com/microsoft/azure-pipelines-tasks/issues)
- [x] I read [pipeline troubleshooting guide](https://docs.microsoft.com/vsts/build-release/actions/troubleshooting)
- [x] I checked [how to collect logs](https://learn.microsoft.com/azure/devops/pipelines/troubleshooting/review-logs?view=azure-devops)

### Task name

AzureAppServiceManage@0

### Task version

0.259.3

### Issue Description

AzureAppServiceManage@0 fails with error: Error: 'subscriptionId' cannot be null.
subscriptionId is not documented as required parameter
setting subscriptionId does not help

### Environment type (Please select at least one enviroment where you face this issue)

- [ ] Self-Hosted
- [x] Microsoft Hosted
- [ ] VMSS Pool
- [ ] Container

### Azure DevOps Server type

dev.azure.com (formerly visualstudio.com)

### Azure DevOps Server Version (if applicable)

_No response_

### Operation system

Ubuntu Latest

### Relevant log output

```shell
##[debug]deployment status not updated for action: Restart Azure App Service
##[debug]task result: Failed
##[error]Error: 'subscriptionId' cannot be null.
```

### Full task logs with system.debug enabled

<details>
  <pre> 2025-11-05T20:54:29.2135826Z ##[debug]Evaluating condition for step: 'Restart WebApp'
2025-11-05T20:54:29.2136513Z ##[debug]Evaluating: SucceededNode()
2025-11-05T20:54:29.2136887Z ##[debug]Evaluating SucceededNode:
2025-11-05T20:54:29.2137333Z ##[debug]=> True
2025-11-05T20:54:29.2137722Z ##[debug]Result: True
2025-11-05T20:54:29.2138230Z ##[section]Starting: Restart WebApp
2025-11-05T20:54:29.2145585Z ==============================================================================
2025-11-05T20:54:29.2145715Z Task         : Azure App Service manage
2025-11-05T20:54:29.2145789Z Description  : Start, stop, restart, slot swap, slot delete, install site extensions or enable continuous monitoring for an Azure App Service
2025-11-05T20:54:29.2145948Z Version      : 0.259.3
2025-11-05T20:54:29.2146015Z Author       : Microsoft Corporation
2025-11-05T20:54:29.2146096Z Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/deploy/azure-app-service-manage
2025-11-05T20:54:29.2146206Z ==============================================================================
2025-11-05T20:54:29.2802959Z ##[debug]Using node path: /home/vsts/actions-runner/cached/externals/node20_1/bin/node
2025-11-05T20:54:29.3478092Z ##[debug]agent.TempDirectory=/home/vsts/work/_temp
2025-11-05T20:54:29.3485788Z ##[debug]loading inputs and endpoints
2025-11-05T20:54:29.3491099Z ##[debug]loading INPUT_CONNECTEDSERVICENAME
2025-11-05T20:54:29.3506477Z ##[debug]loading INPUT_ACTION
2025-11-05T20:54:29.3508161Z ##[debug]loading INPUT_WEBAPPNAME
2025-11-05T20:54:29.3509545Z ##[debug]loading INPUT_SPECIFYSLOT
2025-11-05T20:54:29.3510650Z ##[debug]loading INPUT_SWAPWITHPRODUCTION
2025-11-05T20:54:29.3517209Z ##[debug]loading INPUT_PRESERVEVNET
2025-11-05T20:54:29.3518591Z ##[debug]loading INPUT_SLOT
2025-11-05T20:54:29.3520474Z ##[debug]loading ENDPOINT_AUTH_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994
2025-11-05T20:54:29.3520854Z ##[debug]loading ENDPOINT_AUTH_SCHEME_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994
2025-11-05T20:54:29.3521258Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994_TENANTID
2025-11-05T20:54:29.3521671Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994_SCOPE
2025-11-05T20:54:29.3525672Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994_WORKLOADIDENTITYFEDERATIONSUBJECT
2025-11-05T20:54:29.3526416Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994_WORKLOADIDENTITYFEDERATIONISSUER
2025-11-05T20:54:29.3527747Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994_SERVICEPRINCIPALID
2025-11-05T20:54:29.3529464Z ##[debug]loading ENDPOINT_AUTH_SYSTEMVSSCONNECTION
2025-11-05T20:54:29.3547397Z ##[debug]loading ENDPOINT_AUTH_SCHEME_SYSTEMVSSCONNECTION
2025-11-05T20:54:29.3550971Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_SYSTEMVSSCONNECTION_ACCESSTOKEN
2025-11-05T20:54:29.3551345Z ##[debug]loading SECRET_CONTAINER_AUTHENTICATIONTOKEN
2025-11-05T20:54:29.3551710Z ##[debug]loading SECRET_SYSTEM_ACCESSTOKEN
2025-11-05T20:54:29.3552047Z ##[debug]loaded 19
2025-11-05T20:54:29.3552381Z ##[debug]Agent.ProxyUrl=undefined
2025-11-05T20:54:29.3552719Z ##[debug]Agent.CAInfo=undefined
2025-11-05T20:54:29.3553052Z ##[debug]Agent.ClientCert=undefined
2025-11-05T20:54:29.3553396Z ##[debug]Agent.SkipCertValidation=undefined
2025-11-05T20:54:29.4954676Z ##[debug]agent.proxyurl=undefined
2025-11-05T20:54:29.4955465Z ##[debug]VSTS_ARM_REST_IGNORE_SSL_ERRORS=undefined
2025-11-05T20:54:29.4956125Z ##[debug]AZURE_HTTP_USER_AGENT=VSTS_f60dc0f6-caf8-4879-81ae-319248287b57_build_8_0
2025-11-05T20:54:29.4958420Z ##[debug]check path : /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.4959235Z ##[debug]adding resource file: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.4959667Z ##[debug]system.culture=en-US
2025-11-05T20:54:29.4982233Z ##[debug]Feature 'EnableMsalV3' = 'True'. Processed as 'true'.
2025-11-05T20:54:29.4983094Z ##[debug]Using msalv3
2025-11-05T20:54:29.5212210Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5215320Z ##[debug]Agent.TempDirectory=/home/vsts/work/_temp
2025-11-05T20:54:29.5218449Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5229049Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5232029Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5234945Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5376337Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5381251Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5399723Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5401904Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5406164Z ##[debug]Resource file has already set to: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/node_modules/azure-pipelines-tasks-azure-arm-rest/module.json
2025-11-05T20:54:29.5436014Z ##[debug]check path : /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/task.json
2025-11-05T20:54:29.5438845Z ##[debug]adding resource file: /home/vsts/work/_tasks/AzureAppServiceManage_f045e430-8704-11e6-968f-e717e6411619/0.259.3/task.json
2025-11-05T20:54:29.5439440Z ##[debug]system.culture=en-US
2025-11-05T20:54:29.5450080Z ##[debug]Action=Restart Azure App Service
2025-11-05T20:54:29.5452828Z ##[debug]ConnectedServiceName=5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994
2025-11-05T20:54:29.5453197Z ##[debug]WebAppName=app-xyz-prowler
2025-11-05T20:54:29.5453539Z ##[debug]ResourceGroupName=undefined
2025-11-05T20:54:29.5453874Z ##[debug]SpecifySlot=false
2025-11-05T20:54:29.5454209Z ##[debug]AppInsightsResourceGroupName=undefined
2025-11-05T20:54:29.5454577Z ##[debug]ApplicationInsightsResourceName=undefined
2025-11-05T20:54:29.5454913Z ##[debug]SourceSlot=undefined
2025-11-05T20:54:29.5455584Z ##[debug]SwapWithProduction=true
2025-11-05T20:54:29.5456207Z ##[debug]TargetSlot=undefined
2025-11-05T20:54:29.5456900Z ##[debug]PreserveVnet=false
2025-11-05T20:54:29.5457549Z ##[debug]ExtensionsList=undefined
2025-11-05T20:54:29.5458172Z ##[debug]OutputVariable=undefined
2025-11-05T20:54:29.5458799Z ##[debug]ApplicationInsightsWebTestName=undefined
2025-11-05T20:54:29.5459696Z ##[debug]USE_MSAL=true
2025-11-05T20:54:29.5460031Z ##[debug]MSAL - USE_MSAL override is found: true
2025-11-05T20:54:29.5460987Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 auth scheme = WorkloadIdentityFederation
2025-11-05T20:54:29.5461949Z ##[debug]Overriding useMSAL to true as workloadidentityfederation supports only MSAL
2025-11-05T20:54:29.5462477Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data subscriptionid = 
2025-11-05T20:54:29.5462855Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data subscriptionname = 
2025-11-05T20:54:29.5463546Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 auth param serviceprincipalid = ***
2025-11-05T20:54:29.5464160Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data activeDirectoryAuthority = https://login.microsoftonline.com/
2025-11-05T20:54:29.5464691Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 auth param tenantid = redacted
2025-11-05T20:54:29.5465721Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994=https://management.azure.com/
2025-11-05T20:54:29.5466118Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data environment = AzureCloud
2025-11-05T20:54:29.5466502Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 auth scheme = WorkloadIdentityFederation
2025-11-05T20:54:29.5466968Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data msiclientId = undefined
2025-11-05T20:54:29.5467384Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data activeDirectoryServiceEndpointResourceId = https://management.core.windows.net/
2025-11-05T20:54:29.5467823Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data AzureKeyVaultServiceEndpointResourceId = https://vault.azure.net
2025-11-05T20:54:29.5468251Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data AzureKeyVaultDnsSuffix = vault.azure.net
2025-11-05T20:54:29.5468711Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data ScopeLevel = ManagementGroup
2025-11-05T20:54:29.5469407Z ##[debug]MSAL - getEndpoint - useGraphActiveDirectoryResource=false
2025-11-05T20:54:29.5470066Z ##[debug]MSAL - getEndpoint - useMSAL=true
2025-11-05T20:54:29.5471041Z ##[debug]MSAL - getEndpoint - endpoint={"subscriptionID":"","subscriptionName":"","servicePrincipalClientID":"***","environmentAuthorityUrl":"https://login.microsoftonline.com/","tenantID":"redacted","url":"https://management.azure.com/","environment":"AzureCloud","scheme":"WorkloadIdentityFederation","activeDirectoryResourceID":"https://management.core.windows.net/","azureKeyVaultServiceEndpointResourceId":"https://vault.azure.net","azureKeyVaultDnsSuffix":"vault.azure.net","scopeLevel":"ManagementGroup"}
2025-11-05T20:54:29.5472014Z ##[debug]MSAL - getEndpoint - connectedServiceName=5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994
2025-11-05T20:54:29.5472912Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 auth param authenticationType = undefined
2025-11-05T20:54:29.5473310Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 data EnableAdfsAuthentication = false
2025-11-05T20:54:29.5473710Z ##[debug]5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994 auth param apitoken = undefined
2025-11-05T20:54:29.5474925Z ##[debug]{"subscriptionID":"","subscriptionName":"","servicePrincipalClientID":"***","environmentAuthorityUrl":"https://login.microsoftonline.com/","tenantID":"redacted","url":"https://management.azure.com/","environment":"AzureCloud","scheme":"WorkloadIdentityFederation","activeDirectoryResourceID":"https://management.azure.com/","azureKeyVaultServiceEndpointResourceId":"https://vault.azure.net","azureKeyVaultDnsSuffix":"vault.azure.net","scopeLevel":"ManagementGroup","isADFSEnabled":false,"applicationTokenCredentials":{"connectedServiceName":"5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994","clientId":"***","tenantId":"redacted","baseUrl":"https://management.azure.com/","authorityUrl":"https://login.microsoftonline.com/","activeDirectoryResourceId":"https://management.azure.com/","isAzureStackEnvironment":false,"scheme":2,"isADFSEnabled":false,"useMSAL":true,"tokenMutex":{"_semaphore":{"_value":1,"_cancelError":{},"_weightedQueues":[],"_weightedWaiters":[]}}}}
2025-11-05T20:54:29.5768899Z ##[debug]Processed: ##vso[telemetry.publish area=TaskEndpointId;feature=AzureAppServiceManage]{"endpointId":"5be5bbec-c6f2-4c3c-9e8d-89fb9d78e994"}
2025-11-05T20:54:29.5769650Z ##[debug]Completed action
2025-11-05T20:54:29.5770033Z ##[debug]deployment status not updated for action: Restart Azure App Service
2025-11-05T20:54:29.5770610Z ##[debug]task result: Failed
2025-11-05T20:54:29.5771795Z ##[error]Error: 'subscriptionId' cannot be null.
2025-11-05T20:54:29.5778621Z ##[debug]Processed: ##vso[task.issue type=error;source=TaskInternal;correlationId=2b73fe8a-05b8-4f0e-8338-70eb654352ae;]Error: 'subscriptionId' cannot be null.
2025-11-05T20:54:29.5779616Z ##[debug]Processed: ##vso[task.complete result=Failed;]Error: 'subscriptionId' cannot be null.
2025-11-05T20:54:29.5796138Z ##[section]Finishing: Restart WebApp </pre>
</details>


### Repro steps

```yml
- task: AzureAppServiceManage@0
      displayName: "Restart WebApp"
      inputs:
        azureSubscription: $(SERVICE_CONNECTION)
        Action: 'Restart Azure App Service'
        WebAppName: $(WEBAPPNAME)
```

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[BUG]: AzureAppServiceManage@0 fails Error: 'subscriptionId' cannot be null. #21424

New issue checklist

Task name

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Issue Description

Environment type (Please select at least one enviroment where you face this issue)

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[BUG]: AzureAppServiceManage@0 fails Error: 'subscriptionId' cannot be null. #21424

Description

New issue checklist

Task name

Task version

Issue Description

Environment type (Please select at least one enviroment where you face this issue)

Azure DevOps Server type

Azure DevOps Server Version (if applicable)

Operation system

Relevant log output

Full task logs with system.debug enabled

Repro steps

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions