# Licensing

## How many LTO decks can I operate with a Canister license?

Canister supports multiple tape decks being connected to the same computer, and they can all be used at the same time.

## I have multiple computers with each its own tape deck.

For multiple computers with each its own LTO deck, you'll need multiple activations. Adding additional activations to your license can be done in the [License Manager](https://account.hedge.video).

## How do I add Windows Support to my License?

Windows support can be added by simply Extending your existing Canister license in the [License Manager](https://account.hedge.video).

## I have a Tape Library,  do I need Canister Pro?

Yes, Canister Pro is required to work with tape libraries. Support for tape libraries is currently limited to macOS.

## My license key won't activate the latest Canister

Chances are you have a license that starts with `id` and ends with `ods` or `uks`. This is a legacy license, and cannot be used with versions newer than 20.1. [Contact us ](mailto:canister@hedge.video)for an upgrade coupon or continue to use the now-legacy Canister [20.1](https://hedge.video/download/canister/legacy).

## Can I activate Canister Offline?

Yes, since Canister for Windows 25.4, users with a Pro License eligible for support can request an offline activation file.


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