# API Problem after installation CMS 3.0.3

**URL:** https://community.xibo.org.uk/t/api-problem-after-installation-cms-3-0-3/25809
**Category:** CMS Installation
**Created:** [September 22, 2021, 8:52am UTC](https://community.xibo.org.uk/t/api-problem-after-installation-cms-3-0-3/25809 "2021-09-22T08:52:42Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![rithm](https://community.xibo.org.uk/user_avatar/community.xibo.org.uk/rithm/32/11417_2.png) [@rithm](https://community.xibo.org.uk/u/rithm)
#### Post date: [October 15, 2021, 6:22am UTC](https://community.xibo.org.uk/t/api-problem-after-installation-cms-3-0-3/25809/4 "2021-10-15T06:22:43Z")

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Guys, i was finally able to obtain a access\_token!

What you have to do:

1. Open the path of your library. There should be a folder called “certs”
2. Inside this folder, create three new files:

- encryption.key
- private.key
- public.key

1. Go to [Online RSA Key Generator](https://travistidwell.com/jsencrypt/demo/) and generate a keypair. Copy the contents to the corresponding file (Private Key = private.key, Public Key = public.key)
2. Go to [Generate free random base64 string +\> GeneratePlus](https://generate.plus/en/base64) and generate a 32 bytes long base64-string. Copy your string to the file encryption.key.
3. DONE!

Create in Postman under “Headers” a new key:  
Key: **Authorization**  
Value: **Bearer**

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