mirror of
https://gitlab.com/openlp/website.git
synced 2024-08-30 18:43:36 +00:00
69 lines
2.9 KiB
ReStructuredText
69 lines
2.9 KiB
ReStructuredText
.. title: Workaround for DEP error in Windows
|
||
.. slug: 2013/01/25/workaround-dep-error-windows
|
||
.. date: 2013-01-25 15:01:22 UTC
|
||
.. tags:
|
||
.. description:
|
||
|
||
|Windows|
|
||
|
||
Recently we have had users `report issues with
|
||
OpenLP <http://forums.openlp.org/discussion/1906/openlp-1-9-12-crashes-on-my-windows-vista-laptop/p1>`_
|
||
running on certain installs of Windows with an error about DEP. This
|
||
seems to be mostly on Windows Vista but could possibly be an issue with
|
||
more recent versions of Windows. DEP stands for Data Execution
|
||
Prevention. In short this is to prevent malicious programs from using
|
||
memory in a way that it shouldn't. That is a really poor description,
|
||
but the `folks at Wikipedia have a detailed
|
||
description <http://en.wikipedia.org/wiki/Data_Execution_Prevention>`_.
|
||
You can `find out more from Microsoft
|
||
too <http://windows.microsoft.com/en-US/windows-vista/Data-Execution-Prevention-frequently-asked-questions>`_.
|
||
|
||
When a program you know you can trust experiences an issue with DEP you
|
||
should be able to `disable DEP for that
|
||
program <http://windows.microsoft.com/en-US/windows-vista/Change-Data-Execution-Prevention-settings>`_.
|
||
There is an issue, however, chances are if you try this method OpenLP
|
||
will not be listed (manually selecting the exe will also not work from
|
||
my experience). This will make it impossible to disable DEP for OpenLP
|
||
and to use OpenLP. This leaves us at Plan B, disabling DEP system wide.
|
||
From my reading this doesn't apear to put you at a terribly greater
|
||
security risk if you have good safe computing practices. Using system
|
||
restore (creating a restore point), backing up your system, contacting
|
||
your systems administrator, and all other warnings are in play here
|
||
since this will in theory weaken your computer's security.
|
||
|
||
Now you are aware what this does, here is how to disable DEP and get
|
||
OpenLP running.
|
||
|
||
First, you need to open an elevated command prompt or administrative
|
||
command prompt. If you are unsure how to do that, Vista x64 has a great
|
||
`guide on how to do
|
||
it <http://www.vistax64.com/tutorials/181765-elevated-command-prompt.html>`_.
|
||
|
||
Next enter this command into the elevated command prompt:
|
||
|
||
**bcdedit.exe /set {current} nx AlwaysOff**
|
||
|
||
You should get a message back letting you know the changes have been
|
||
made successfully.
|
||
|
||
Close the command prompt and all running applications then reboot your
|
||
machine.
|
||
|
||
OpenLP should now start and run for you. If you want to enable DEP later
|
||
open an elevated command prompt and enter:
|
||
|
||
**bcdedit.exe /set {current} nx OptIn**
|
||
|
||
Reboot and DEP is now enabled again.
|
||
|
||
These instructions were taken from `instructions on the Vista x64
|
||
site <http://www.vistax64.com/tutorials/120778-dep-enable-disable.html>`_
|
||
I suggest you give it a look also.
|
||
|
||
This may not be the best way to do this as we don't seem to have any
|
||
real DEP/Windows experts here so if you have a better way let us know in
|
||
the comments below and if it checks out we will update the blog entry.
|
||
|
||
.. |Windows| image:: /pictures/Windows-8-logo-300x300.jpg
|
||
|