# Access Denied to PDN

**URL:** <https://forums.pega.com/t/access-denied-to-pdn/3404>\
**Category:** General\
**Tags:** pega-academy\
**Created:** [October 26, 2022, 6:43am UTC](https://forums.pega.com/t/access-denied-to-pdn/3404 "2022-10-26T06:43:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Manikandanp7951](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@Manikandanp7951](https://forums.pega.com/u/Manikandanp7951)\
**Post date:** [October 26, 2022, 6:43am UTC](https://forums.pega.com/t/access-denied-to-pdn/3404/1 "2022-10-26T06:43:34Z")

</div>

I was using Pega for past 3 months and on a Sudden today tried to open System Architect and Getting “Access Denied”

FYI,

 ![Access .png](https://pega1.discourse-cdn.com/pega/original/2X/9/9fd4222c7bdc5615345313ef70cc198737bed50d.png)

---

<div class="post-metadata">

**Author:** ![Bhumireddy](https://yyz2.discourse-cdn.com/pega/user_avatar/forums.pega.com/bhumireddy/32/23248_2.png) [@Bhumireddy](https://forums.pega.com/u/Bhumireddy)\
**Post date:** [October 26, 2022, 7:01am UTC](https://forums.pega.com/t/access-denied-to-pdn/3404/2 "2022-10-26T07:01:39Z")

</div>

Hi @Manikandanp7951

Please can you try below System Architect Mission (Pega Platform 8.7)

May I know the version of the System Architect Mission that you have tried?

> **[System Architect | Pega Academy](https://academy.pega.com/mission/system-architect/v4)**

I hope this will help you,

**Thanks,**

**Ashok**

---

<div class="post-metadata">

**Author:** ![Manikandanp7951](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@Manikandanp7951](https://forums.pega.com/u/Manikandanp7951)\
**Post date:** [October 26, 2022, 10:42am UTC](https://forums.pega.com/t/access-denied-to-pdn/3404/3 "2022-10-26T10:42:13Z")

</div>

@Bhumireddy Thank You it is working with the version you provided