FAQ & Troubleshooting
Answers to common questions about Labs64 NetLicensing, grouped by topic, plus troubleshooting answered by our support team. In addition, the NetLicensing Community Support repository collects questions, ideas and bug reports from the vendor community.
Getting started
- Can I try the NetLicensing API without an account?
- Does NetLicensing use license keys?
- Is there an OpenAPI (Swagger) specification for the NetLicensing API?
- Should I build my own license server or use a licensing service?
- What is NetLicensing?
- What is the NetLicensing API Rate Limit and what happens when I exceed it?
- Which programming languages does NetLicensing support?
Validation
- How do I create customers automatically on first use?
- How does license validation work in NetLicensing?
- How often should my application validate the license?
- What do HTTP 400, 401, 402, 403 and 404 mean in NetLicensing API responses?
- What happens if NetLicensing is unreachable?
- Why does validation return valid=false?
Licensing models
- How do I enable features or editions per customer?
- How do I implement usage-based billing or metering?
- How do I license a SaaS application?
- How do I limit the number of concurrent users?
- How do I limit the number of devices per license?
- How do I move a node-locked license to a new computer?
- How do I offer a free trial of my software?
- How do I sell a perpetual license?
- How do customers renew an expired subscription?
- How to Generate a Machine ID or Fingerprint
- How to license dockerized applications or virtual machine environments
- How to license product using multiple licensing models
- How to offer multiple VM licenses to one customer
- What is the difference between node-locked and floating licenses?
Licenses and customers
- How can customers see their licenses?
- How do I get notified when a customer or license is created?
- How do I revoke or deactivate a license?
- How do customers buy or upgrade licenses?
- How to add additional data to the customer profile
- How to add tags to the customer using RESTful API
- How to create a new License programmatically
- How to deliver license after successful shop transaction
- How to use NetLicensing in reseller mode
- What is the difference between the warning level and valid?
Security
- How do I protect validation responses against tampering?
- Is NetLicensing GDPR compliant, and who processes the data?
- Is it safe to embed a NetLicensing API key in my application?
- Which authentication method needs to be used with NetLicensing RESTful API?
Offline and on-premises
- Can I validate licenses offline with a signed file?
- Can NetLicensing run on premises or in an air-gapped network?
- How do I handle system clock changes in offline validation?
- How to use offline validation using TTL and cached response
Integrations
- Can AI agents manage NetLicensing?
- Can I use NetLicensing in the Unity3D projects?
- How to use NetLicensing with subscription management services
- Which payment methods and e-commerce platforms are supported?
Troubleshooting
- Cannot login on the new NetLicensing Management Console (resolved)
- How to use Java client library behind proxy
- Payment cannot be processed due to the PayPal currency conversion handling error
- What is the amount upper limit on a single PayPal transaction?
More questions
- Can AI agents manage NetLicensing?
- Can I try the NetLicensing API without an account?
- Can I use NetLicensing in the Unity3D projects?
- Can I validate licenses offline with a signed file?
- Can NetLicensing run on premises or in an air-gapped network?
- Cannot login on the new NetLicensing Management Console (resolved)
- Does NetLicensing use license keys?
- How can customers see their licenses?
- How do I create customers automatically on first use?
- How do I enable features or editions per customer?
- How do I get notified when a customer or license is created?
- How do I handle system clock changes in offline validation?
- How do I implement usage-based billing or metering?
- How do I license a SaaS application?
- How do I limit the number of concurrent users?
- How do I limit the number of devices per license?
- How do I move a node-locked license to a new computer?
- How do I offer a free trial of my software?
- How do I protect validation responses against tampering?
- How do I revoke or deactivate a license?
- How do I sell a perpetual license?
- How do customers buy or upgrade licenses?
- How do customers renew an expired subscription?
- How does license validation work in NetLicensing?
- How often should my application validate the license?
- How to Generate a Machine ID or Fingerprint
- How to add additional data to the customer profile
- How to add tags to the customer using RESTful API
- How to create a new License programmatically
- How to deliver license after successful shop transaction
- How to license dockerized applications or virtual machine environments
- How to license product using multiple licensing models
- How to offer multiple VM licenses to one customer
- How to use Java client library behind proxy
- How to use NetLicensing in reseller mode
- How to use NetLicensing with subscription management services
- How to use offline validation using TTL and cached response
- Is NetLicensing GDPR compliant, and who processes the data?
- Is it safe to embed a NetLicensing API key in my application?
- Is there an OpenAPI (Swagger) specification for the NetLicensing API?
- Payment cannot be processed due to the PayPal currency conversion handling error
- Should I build my own license server or use a licensing service?
- What do HTTP 400, 401, 402, 403 and 404 mean in NetLicensing API responses?
- What happens if NetLicensing is unreachable?
- What is NetLicensing?
- What is the NetLicensing API Rate Limit and what happens when I exceed it?
- What is the amount upper limit on a single PayPal transaction?
- What is the difference between node-locked and floating licenses?
- What is the difference between the warning level and valid?
- Which authentication method needs to be used with NetLicensing RESTful API?
- Which payment methods and e-commerce platforms are supported?
- Which programming languages does NetLicensing support?
- Why does validation return valid=false?