# Slicer 4.9. (r27399) crashes on startup in Windows remote session

**URL:** https://discourse.slicer.org/t/slicer-4-9-r27399-crashes-on-startup-in-windows-remote-session/4220
**Category:** Support
**Tags:** bug
**Created:** [September 28, 2018, 2:55pm UTC](https://discourse.slicer.org/t/slicer-4-9-r27399-crashes-on-startup-in-windows-remote-session/4220 "2018-09-28T14:55:11Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)
#### Post date: [September 28, 2018, 3:20pm UTC](https://discourse.slicer.org/t/slicer-4-9-r27399-crashes-on-startup-in-windows-remote-session/4220/2 "2018-09-28T15:20:27Z")

</div>

Please see the following thread, and in particular two posts:

> [@Slicer Remote access](https://discourse.slicer.org/t/slicer-remote-access/3148/3):
>
> Slicer 4.9 minimum OpenGL requirements have been increased. Does this answer your questions? [https://issues.slicer.org/view.php?id=4252](https://issues.slicer.org/view.php?id=4252) If not, then please write exact version of your Slicer, operating system, and remote desktop application.

> [@Slicer Remote access](https://discourse.slicer.org/t/slicer-remote-access/3148/6):
>
> The link from lassoan above describes the issue: Windows RDP client does not support newer OpenGL versions, and so Slicer crashes – unfortunately without a useful error message yet. The suggestion is to try VNC or NoMachine. I can confirm NoMachine works with recent Slicer builds from a Mac client to a Linux host. I haven’t tried it with a Windows client, but it should probably work fine.

Suggestions are: use TeamViewer, use VNC, or start Slicer _before_ connecting with Remote Desktop.

Hope that helps!

---

_[View the full topic](https://discourse.slicer.org/t/slicer-4-9-r27399-crashes-on-startup-in-windows-remote-session/4220)._