> For the complete documentation index, see [llms.txt](https://docs.enercalc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enercalc.com/sel-faq/setup-and-licensing/installation-activation-lice/making-changes/getting-updates/cant-access-the-latest-update.md).

# Can't Access the Latest Update

Why SEL won't let you install the latest update even with active support, and how a new PCC fixes it.

## I know that my Maintenance & Support Plan is current (or my subscription is active), so why won't the system let me install the latest update?

If you are still using Build 12, be sure to install build 20.xx.xx.xx. That change requires an installation, not just an update.

If you are on build 20.xx.xx.xx and are still having trouble, the most common reason is that you have not pasted your most recent Product Control Code (PCC) into the software. When you renew your subscription you receive a new PCC that contains your new expiration date. Without the correct date, the program cannot properly grant you access to the latest Allowed Version.

To correct this, simply locate the (latest) delivery email (or ask for a resend), and follow the instructions contained therein.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.enercalc.com/sel-faq/setup-and-licensing/installation-activation-lice/making-changes/getting-updates/cant-access-the-latest-update.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.