Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository
Then to install:
dpkg -i kali-archive-keyring2018.1all.deb
Adobe reader is used by many professions, and in many capacities. It used to be one of the most commonly installed applications on business PC’s by anyone in any sector. However, Server 2016 is not supported.
https://helpx.adobe.com/reader/system-requirements.html
This makes it a nightmare for modern portable apps, RDS servers(Terminal servers) or even just file servers.
So there is a work around, however it is not recommended. The best fix for this is to scrap Adobe, and move to one off the other large PDF Vendors out there to cater to your PDF viewing needs.
Three that i have personally verified as working and are supported on server 2016 are:
There will however be a small percentage of us admins or superusers, that have to get this Adobe based software working.
Start by using the latest installer for Windows 10,
Once installed, you may find that it will work for a while, but eventually as it updates you will no longer be able to open PDF documents using it.
To get around this you have to unfortunately turn off protected mode.
Now, i shouldn’t really need to preface this, but i will. This is not supported, nor recommended – Reader has a protected mode for a reason, disabling it is opening you to all sorts of vulnerabilities.
If you do wish to continue, open up Adobe Reader – go into Edit –> Preferences –> Security (enhanced) –>
Turn Protected mode off, and untick ‘ Enable protected mode at startup’
If you like I could not even get to the preferences panel in order to change these settings then all you need to do is open adobe reader by accessing via compatibility mode. Set this as XP (which itself does not support protected mode) – then change settings, and then change compatibility mode back off.
Let me know in the comments if this has helped you.
To get around this popup – which lets face it, is just downright inconvenient; we need to stop the exe file that produces this window from running. Code below, with comments preceded by a #
Run command prompt as administrator (elevated) and enter these commands:
#change directory to system32
cd /d "%Windir%\System32"
#Take over permissions owner to current admin
takeown /f musnotification.exe
#Change permissions to deny anyone/system running from it
icacls musnotification.exe /deny Everyone:(X)
#Take over permissions owner to current admin
takeown /f musnotificationux.exe
#Change permissions to deny anyone/system running from it
icacls musnotificationux.exe /deny Everyone:(X)
You will see form the above, that there are two processes ‘musnotificationux.exe’ and ‘musnotification.exe’ that are responsible for querying updates and notifying the end user. The great part of this fix, is that it will not interfere with any update processes themselves, just the notifications. So have no fear – updates will still continue to function as normal, just now without this troublesome pop-up.
I’ll keep this post short and sweet, you have lost your PFsense firewall/router Admin login password and need back in. Quick.
There are two options available to you:
Plug a monitor and keyboard into the PFSense appliance/server or connect to console
You can then select ‘Option 3) to reset the webGUI password.
Should this fail, or you have set an admin password to even get this far, then follow below;
1, Reboot appliance
2, Select boot option for ‘Single User Mode’
3, Hit enter to start /bin/sh
3, run mount -a -t ufs
4, run /etc/rc.initial.password and follow the prompts to reset password
5, reboot /sbin/reboot
Depending on what version o PFSense you are using, you will have just specified the new password, or if you did not have that option, then it will have reset to the PFSense default password of: Admin | pfsense
Let me know in the comments if this helped you or was useful to you in any way!
As a wordpress user, or hosting admin i’m sure you have seen it before – the dreaded err_too_many_redirects page.
This is caused by a number of issues, including:
There are countless reasons that could cause this error, and most of them are easily fixable with a quick google. However Yesterday i came across a new one.
If you came here for the Solution here it is:
Edit your wp-config.php file and at the bottom add:
if (strpos($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') !== false)
$_SERVER['HTTPS']='on';
Well, in this case it was a combination of things, this is very specific to three things in this environment. 1) Shared Hosting. 2)No root SSL Certificate. 3)CloudFlare ‘Always use HTTPS’ settings.
After taking a step back and working out the basics of what i had, and why other ‘fixes’ that usually work, weren’t- i realised what i had here, was a simply reverse proxy. That is, that where the files are hosted without SSL, but the reverse proxy (in this case CloudFlare) was using SSL.
Finally, i found this nugget in the WordPress Codex:
https://codex.wordpress.org/Administration_Over_SSL#Using_a_Reverse_Proxy
And it all clicked.
“If WordPress is hosted behind a reverse proxy that provides SSL, but is hosted itself without SSL, these options will initially send any requests into an infinite redirect loop.
And that is why we need to tell wordpress to force SSL to prevent this WordPress redirect loop when using CloudFlare.
Hope that someone finds this helpful!
Does my DMARC record need to include quotation marks or not?
9/10 times, no quotes are needed.
However, this all depends on where you edit your DNS.
In the raw DNS zone file, which is what is passed from machine to machine, the .txt record DOES need to be enclosed in quotation marks if it contains spaces. It is unlikely that your domain/DNS provider however will give you direct edit access to this, and instead will be providing their own interface to edit entries with pre-built in quotation marks. Exceptions to this can be found when directly editing via CLI at the root of a server, or when using the raw edit mode on WHM.
For example, Cloudflare will automatically wrap any string of text in a .TXT record in quotes for you, and remove extra quotes you may add,
namesco however will not automatically remove extra quotations to their already provided ones – which could lead to double quotations, and issues further down the line.
It pretty much boils down to your provider, it is best to have a quick skim of their DNS Q&A section – or to test by trial and error!
My favorite testing site is currently https://mxtoolbox.com/DMARC.aspx
There is multiple factors for disk performance not showing up, including raid cards, the server being nested on a HV or running as a VM, there is a simple quick fix though;
Step 1)
Open Elevated Command Prompt
Step 2)
Start disk performance counters:
diskperf –y
With any luck, that should be it now showing in Task manager, if it does not, close and re-open it for the disk performance indicators to appear.
On occasion, you may need to re-install/install the latest raid card drivers if they are missing in order for the disk performance indicators to read and run correctly.
Occasionally a backup client will disconnect, or cannot connect in the first place to obtain its backup set and process its jobs.
With pre-provisioning systems, this is often the case for certainly Mac and Linux machines.
(!) IMPORTANT: This method is NOT supported for registration of Agent for VMware (Windows)
Manually Register Acronis Backup client.
Use quotation marks, if your password contains special characters or spaces.
Windows OS Linux OS OS X NB: if you are outwith the normal Acronis Data Centres, as i was, then replace the cloud.acronis.com URL with the URL you use to log into your dashboard. i.e. https://eu-cloud.acronis.com
1. Open Command prompt and navigate to C:\Program Files\BackupClient\BackupAndRecovery:
cd “C:\Program Files\BackupClient\BackupAndRecovery”
2. Issue this command to register the client machine:
register_msp_mms.exe register https://cloud.acronis.com
1. Open terminal as root user
2. Type in the following command to register the agent:
/usr/lib/Acronis/BackupAndRecovery/AmsRegisterHelper register https://cloud.acronis.com
1. Open terminal.
2. Execute:
sudo -u root “/Library/Application Support/BackupClient/Acronis/BackupAndRecovery/AmsRegisterHelper” register https://cloud.acronis.com
Kiosk mode, or running big display to show ads, or company info is a big field in IT.
Sure there are multiple services and companies who will come out and install you a fancy system that you email them to update and all, but what if you just want a low cost, low energy installation that you have full control of?
Well, this was my predicament.
Below is how i set up a Raspberry Pi to run a 4K TV which was then placed on a pole mount in the window of a customers shop. (in fact i have now installed over 13 of these at various locations, all of which require minimal interaction, and are very energy efficient.
The basis is this;
1) Create info/powerpoints/video’s or whatever you wish to display in/on a managed website/url.
2) Have a low powered RPi display that simply boots straight into the website/url of your choice.
The reasons i have chosen this path are many, but the pro’s include, being able to modify and push the content on the fly, without ever having to touch or reconfigure the display or Pi and having the Pi set up in a fool proof way that even if there is a power interruption, the pi automatically reboots and runs where it left off.
Download Image & Install
Raspbian Latest (Stretch)
Necessary Software for Kiosk Mode
sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get install matchbox x11-xserver-utils ttf-mscorefonts-installer xwit sqlite3 libnss3
Then reboot : sudo reboot
Installation of libgcrypt11
wget http://ftp.acc.umu.se/mirror/cdimage/snapshot/Debian/pool/main/libg/libgcrypt11/libgcrypt11_1.5.3-5_armhf.deb
sudo dpkg -i libgcrypt11_1.5.3-5_armhf.deb
Installation of Chromium browser 48
sudo apt-get install chromium
# Download ffmpeg extra package
wget http://launchpadlibrarian.net/234969705/chromium-codecs-ffmpeg-extra_48.0.2564.82-0ubuntu0.15.04.1.1193_armhf.deb
sudo dpkg -i chromium-codecs-ffmpeg-extra_48.0.2564.82-0ubuntu0.15.04.1.1193_armhf.deb \
Chromium-browser_48.0.2564.82-0ubuntu0.15.04.1.1193_armhf.deb
Configure Chromium Kiosk autostart:
nano .config/lxsession/LXDE-pi/autostart
@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
@chromium-browser --kiosk --disable-session-crashed-bubble --disable-infobars http://YOUR WEBSITE URL
Hit ctrl+o , ctrl+x
Disable Screen Saver
apt-get install Xscreensaver
Set to disable screensaver
Hide Cursor
Get package:
Sudo apt-get install unclutter
Run unclutter:
Unclutter -display :0 -noevents -grab
Resolution Setup:
sudo nano /boot/config.txt
Add in just under: display_rotate=1 (Or “display_rotate=0” for vertical boards)
resolution 82 1920x1080 60Hz 1080p
Or whatever resolution your Video’s/display will be showing
hdmi_ignore_edid=0xa5000080
hdmi_force_hotplug=1
hdmi_boost=7
hdmi_group=2
hdmi_mode=82
hdmi_drive=1
Since Windows 8, the startup folder has been an elusive beast, but fear not, this simple command will force it to reveal itself in no time at all.
1) Win + R
2) shell:startup
3) Enter/OK
Or the path for the startup folder in windows 10:
"C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"
![DMARC with quotes or without? [SOLVED]](https://cannotdisplay.com/wp-content/uploads/2019/01/Image-3888.png)
![[SOLVED] Manually Register Acronis Backup Client for Backup Cloud](https://cannotdisplay.com/wp-content/uploads/2018/02/Image-2581.png)
![[Solved] Set up a Raspberry Pi as a window display (kiosk mode)](https://cannotdisplay.com/wp-content/uploads/2018/02/RaspPiKioskMode.jpg)