Change the default location for installing apps Windows

As the size of hard drives increase, more people are using partitions to separate and store groups of files.

Windows uses the C:\Program Files directory as the default base directory into which new programs are installed. However, you can change the default installation drive and/ or directory by using a Registry update.

Go to :-

- Start > Run 

Or click Windows+R button

- Type “regedit” and press enter

- Go to this directory…

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion

 Look for the value named ProgramFilesDir. by default, this value will be C:\Program Files. Edit the value to any valid drive or folder and XP will use that new location as the default installation directory for new programs.

Solved: High disk memory and CPU usage windows operating system

 High disk, memory and cpu usage:

There are following reasons that may cause high disk usage:

1. Un-optimized disk

2. Un-necessary services running at the start up

3. Un-necessary applications running

4. Pending windows update

Solution:

1. Disk defragmentation: After a long time data stored in the disk may not be properly fragmented, which can cause high disk usage or high cpu utilization. Open disk fragmentation by navigating to Start button and typing and opening "Defragment and optimize drives"

Select all the drives one by one and analyze it.

Once analyzed, select the drives one by one and click on Optimize. 

2. Check and disable un-necessary start up services:

Un-necessary start up service may cause high disk and cpu usage.

Open task manager, under application, check for the applications that are no longer required to be started at the start up.

Select the service, right click and click on disable for the services that are not required to be started at the start up.

3. Kill processes that are not required to be running in the background

Un-necessary process may cause high disk and cpu usage.

Open task manager, under processes, check for the processes do not belong to Windows and not required to be run by system all the time. You may end the process by selecting the process (which you know that not required to be run), right click on it and end task.

3. Disable un-necessary services: To disable un-necessary services, open run prompt (Windows+R) and type services.msc and hit enter:

In the services list, look for the non-essential running status services (other then Windows services) that are not required to be run in the background. 

Right click on the service you would like to disable, click properties, under General tab, Startup type: Select Disable, click on Apply and OK

 

Make sure to restart the computer after applying any of the steps above.

4. Pending windows update:

There are pending windows updates may cause your system slow down.

Check and update the windows by following below steps

a. From the start button, search for windows update

b. Check for updates

c. Install updates and restart the system.

Solve- Change Virtual Machine ( Virtual Box ) Android Machine Full Screen Resolution Change

1- Open your Virtual Android Machine and select debug mode Option and enter.

 2- Wait until the process will complete then press enter.

 3- In command prompt Run this 3 commands step by step

• mkdir /boot                                           ( create Boot folder )
• mount /dev/sda1 /boot                          ( Mount your disk with boot folder )
• vi /boot/grub/menu.lst                           ( VI for edit your grub )

 4- Press "i" (for edit) and go to the first line begins with kernel /android, and add vga=ask after SRB=/android-... ( Look the image )  ↴

 

5- After edit press "ESC" (Exit editing) then press shift+zz (save and exit).
6- In the command prompt run this commands.

• umount /boot                             
• rmdir /boot                                 ( Remove your directory )
• reboot -f                                      ( Rebooting )

7- After Reboot close your machine for set your resolution in vga list.
8- Check your main machine resolution. In my case my machine resolution is 1366x768x32.Open Terminal (Linux) or Command prompt (Windows) and run this command.

•   VBoxManager setextradata "Android-9" "CustomVideoMode1" "1366x768x32"

( Replace Android-9 with your android machine name and replace resolution 1366x768x32 with your Main machine Resolution.)

9- Now start your Android machine.

 10- Press enter for selection your resolution list.

 11- Check your resolution in this list and type the number of your resolution and press enter.

 

After this booting process you will get your Full Screen Resolution Android Virtual Machine.

Hack The Box Connect your 1st Machine Setup your HTB Machine for Testing

Create Lab

1- Create Virtual Box Machine or Virtual Machine with Kali Linux
2- Install OpenVpn by this command (I have already installed).

 sudo apt-get install openvpn

Now How to Connect Machine of Hack The Box.

1- Login to Hack The Box.

https://www.hackthebox.eu/login

2-  Go to  Access and read Lab Access Details.

 3- Also Check current status of your Server.

4- Download the Connection Pack file.

5- Downloaded file Extension is ".OVPN". Now connect server using this file. Run this command on terminal.
sudo openvpn download_file.ovpn

replace file with your downloaded file and run the command. After running you got the message after success Completed. 
Do not close this Terminal after completed. 

6- Also check status on your site.

Your server connection status is UP.

7- Now select the machine of Hack The Box. Select All option below in Machines for showing all Machines.

Right side you have options for Filters. Now filter which machine you want to connect.

After filter select any machine and open by clicking on name of machine.
you got this window.

Now you have a Name of your machine and IP.
8- Ping this ip on terminal by this command.
ping 10.10.10.181
if your ip pinging that mean you are success full established your connection with your Hack The Box testing machine.


Now Enjoy Testing your Hack The Box Machine.

Hack The Box Sign-UP INVITE CODE 2020 Login Step by step Process Make Invite Code for HTB

1- open this site Link

https://www.hackthebox.eu/invite

2- Right Click on page and go select "View page source" from menu.

3- Select Console Tab.

4- In the Bottom of the console type makeInviteCode() and Enter.

5- After enter you get the code below in data. Copy the code its inscripted code.

6- Also below provide enctype "BASH64"option which provide you your decryption of this code.

7- Go to this site for decode this code, Past your code on this site and select Encode.
https://www.base64decode.org/

 8- In this output decode data you have a path "/api/invite/generate"
  Copy this path it's help to create your full url for generate key look below.

Open CMD (Window) | Terminal (Linux) and run this command.

curl -XPOST https://www.hackthebox.eu/api/invite/generate

9- After run this command you have output with Success Code. This is your final Encoded Key. Copy this code, and again decode this by same bash64 link.
https://www.base64decode.org/

 10- Now you have your fresh key for create New user Account for Hack The Box. Copy this Decode Key and past on your Hack The Box invite code input.
https://www.hackthebox.eu/invite

                    Now go for Sign-UP Your New Account.

Dual Boot (Linux,Windows10) Boot option menu missing Linux entry , Linux kernel Headers Missing , Missing VMLINUZ file, Rescue a Non-Booting GRUB-2 Operating System Missing,Crash,Corrupt

Errors :-

1- Dual Boot (Linux,Windows10) Boot option menu missing Linux entry.
2- If  Operating System missing or corrupt or crash
3- Showing Black screen with command prompt grub:
4- Missing VMLINUZ file form boot folder.
5- Missing Linux Kernel Headers.
6- How to Rescue a Non-Booting GRUB-2.

COMMON REASON:- Because Linux Kernel Headers files are missing.
  

Solutions :-

 1- Boot with live Linux OS CD/USB.
 2- Select Try Ubuntu without installing.

 3- Open terminal after booting complected run this commands.
    sudo fdisk -l  also use  sudo lsblk -l    (Both command provide disk detail. For checking your Linux disk and EFI partition detail list)
 After find your installed Linux partition and EFI partition run next command for mounting your installed disk and partition for repairing your grub.
    sudo mount /dev/sda4 /mnt      (Here sda4 is my Linux partition)
    sudo mount --bind /dev/pts /mnt/dev/pts
    sudo mount --bind /proc /mnt/proc
    sudo mount --bind /sys /mnt/sys
    sudo chroot /mnt
4- After success this full process without any error run this command
    apt-get install --reinstall linux-image-generic
(This process require some time with internet connection.)
5- Reboot the system and remove the CD/USB
6- Select 'C' for command line.

 7- This type of window (command-line) open on your screen.

 Run this command step by step on command prompt.
    ls                            (For know about your drive and partition)
    ls (hd0,gpt4)           (hd0 is my hard disk and gpt4 is my Linux partition after run ls)
    set root=(hd0,gpt4)
    linux /boot/vmlinuz-5.4.0-33-generic root=/dev/sda4           
    (use tab for your vmlinuz version which found in /boot directory replace with your version.)
     initrd /boot/initrd.img-5.4.0-33--generic          
    (use tab for your initrd version which found in /boot directory replace with your version.)
     boot
8- Finished. After boot command your computer will boot with Linux. after booting and login please update your grub with this command.
    sudo update-grub

Windows 10 user Access Deny Installing any Software Application, How to provide user Admin Access or Change user privilege Through Safe Mode also start SAFE MODE IN WINDOWS 10

Errors ➡

1. This ap can't run on your pc.To find a version for your pc, check with the software publisher.
2. Check the path, and then try again.
3. User not authorize to install require Admin permissions.
4. Access Deny. (When install any software).
5. How to open Safe Mode in Windows 10 Environment.
6. How to Activate Admin account, if user not have privilege to create any Admin account or activate admin account through command line. 

Solutions ➡


Best way to Enable SAFE MODE | Activate Administrator account


Follow Steps ➠


Search on start Menu ➞ Reset this PC ➞ Restart Now (After restarting)

➞ Troubleshoot ➞ Advanced Option ➞ Startup Setting ➞ Restart (After restart showing multiple options) ➞ Enable SAFE MODE with Command Prompt (Press number which provide in front of the options) ➞

(Login with your current user, Now you are in SAFE MODE with command prompt, Let's activate your Administrator account through this command)

net user administrator /active:yes 


 (then sign out or restart your PC. Admin account is now activated and you have permission to change your other user privilege through this account or create a new admin account )

(For deactivation Administrator account run below command)

net user administrator /active:no

___________________________________XXXX___________________________________________

Windows server command line, kill and restart the service

Below are the commands can be used to check the hang service, you can force kill the service and restart:
1. To check the service status
a) Open command line(as administrator), telnet the service with the port as below:
telnet server_ip port
Example: telnet 10.10.10.10 9000
if telnet is failed, go to step b to kill the service:
b) sc queryex "service_name"
Example: sc queryex myservice
Note the PID and run below command to kill the service
c) taskkill /f /pid PID
Example: taskkill /f /pid 1234
To start the service from command line
d) sc start service_name
Example:  sc start myservice

Missing 1920x1080 resolution in linux

You may have to update your grub file in order to enable the custom resolution in the below file:
$sudo nano /etc/default/grub
Find and remove # from GRUB_GFXMODE line and replace with your required resolution, so it will look like this
GRUB_GFXMODE=1920x1080
Save and exit (Press Cltr+x ,y and enter).
Run below command and reboot.
$sudo update-grub
$sudo reboot

Unzip or extract .zip file in linux

In order to unzip a .zip file in linux (Ubuntu) type this in terminal:
$unzip file_name.zip -d destination_folder
For example, to extract a file named HelloWorld.zip to my current directory:
$unzip HelloWorld.zip -d .
Here . represents current directory, you can give a path to the directory to extract into.
If you see "command not found", you need to install zip command by typing:
$sudo apt-get install unzip

Similar to this, you can zip a file by below command:
$zip filename.zip filename
To install command zip type:
$sudo apt-get install zip

Older programs not compatible with Windows 7‏ or above

Not all, but some older programs may not work in Windows 7 or Windows 8 or above. Desktop applications and software written for Windows Vista should work for Windows 7 as well but some older programs might  have compatibility issues. Before installing the software/programs, we need to check whether it is compatible with the Windows version you are using.  You might encounter an error while running programs which are not compatible for Windows 7 or others:

 Now we talk about what could be reason behind old programs not working in Windows 7. Programs designed for older versions of windows like Windows 98, Windows 2000, Windows XP or Windows Vista are tested for compatibility with these version and are not tested for future release of Windows operating systems like Windows 7 or so, we are not sure if they are going to work for newer release of Windows. However, when a newer versions of Operating system is released, this has been taken care most of the time so that older versions should work, depending on the class (or type) of device, many hardware devices need a new Windows 7 specific driver to function properly on Microsoft's latest operating system. It also depends on your operating system architecture, for an example if you are using Windows 7 64-bit and trying to install a program which is built for 32-bit motherboard, it will error out. Also, you get some options to run your software with different compatibility modes:

Let's talk about how can try to make incompatible software work in Windows 7.  User following steps to run your program in Windows 7.

Right click on the program(exe file/setup file), click on properties, click on compatibility tab and follow the instructions below, once you make change any of these properties, try running the software:
Compatibility mode: Runs the program using settings from a previous version of Windows. Try this setting if you know the program is designed for Windows 7 version of Windows.
Reduced color mode: Uses a limited set of colors in the program. Some older programs are designed to use fewer colors.
Run in 640 × 480 screen resolution: Try this setting if the graphics for the program appear jagged or are rendered improperly.
Disable display scaling on high DPI settings: Turns off automatic resizing of programs if large font sizes are used. Try this setting if large-scale fonts are interfering with the appearance of the program.
Run this program as an administrator: Some programs require administrator privileges to run properly. If you aren't signed in to your Windows 7 PC as an administrator, this option is unavailable.
Change settings for all users: Lets you choose settings that will apply to all users on your Windows 7.

You can also try running program compatibility troubleshooter in Windows 7 as below:
Run the Program Compatibility Troubleshooter: Open the Program Compatibility troubleshooter by clicking the Start button in Windows 7, and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Under Programs, click Run programs made for previous versions of Windows.

Workaround: Blue screen error Windows 7

Description:
It is also called "STOP Error" or "Blue screen of death"(BSOD), windows will display a message "A problem has been detected and windows has been shutdown to prevent damage to your computer".
The error screen may show different error codes as per the issue. Windows automatically creates a “minidump” file that contains information about the crash and saves it to your disk. You can view information about these minidumps to help identify the cause of the blue screen. The error is not much helpful in investigating the issue.

Cause:
This error could cause due to following reasons:
1. Due to any hardware,software or device driver issue
2. Any recent hardware/software changes made to the system
3. Critical OS data has become corrupted
4. Windows is not able to recover from it without losing data
5. System may running out of memory

Troubleshooting:
There are following solutions could be followed in order to troubleshoot the problem:
Use System Restore: If your system recently started blue-screening, use System Restore to roll its system software back to a previous state. If this works, you’ll know that it’s likely a software problem.
Scan for Malware: This could also be due to any system critical file affected by Malware. Scan your computer for malware to ensure if any malicious software causing it to crash.
Install Updated Drivers: An incorrectly installed driver can lead to crashes. Download the latest drivers for your computer’s hardware from your computer manufacturer’s website and install them — this may fix BSODs caused by driver problems.
Boot Into Safe Mode: If your computer is blue-screening every time you turn it on, try booting into safe mode. In safe mode, Windows loads only the essential drivers. If a driver you’ve installed is causing Windows to blue screen, it shouldn’t do so in safe mode. You can work on fixing the problem from safe mode. Also, check if the system is not running out of memory or the system has enough space in its windows drive.
Run DiskCheck: Run chkdsk by going to the Safe Mode and typing "chkdsk" in command prompt in order to determine any disk errors if there is any.
Check for Hardware Problems: Blue screens can be caused by faulty hardware in your computer. Try testing your computer’s memory for errors and checking its temperature to ensure that it isn’t overheating. Also, you can check your system hardware in order to make sure if everything is plugged in correctly like hard disk, RAM etc and there are no hardware connectivity issues. Replace any faulty hardware if detected.
Reinstall Windows: Reinstalling Windows is the last option. It will remove/uninstall all your existing system software and other device drivers.

Warnings: Backup your data to an external drive in Safe Mode before restoring last known good configuration or running repair diagnostics. Do not edit the registry or the start-up programs without technical assistance or how-to.

Quick fix: The VPN client is unable to establish a connection (Cisco Anyconnect)

This is due to Internet Connection Sharing services running and might have conflicts with Cisco Annyconnect VPN. Follow below steps below to resolve the issue:

1. Go to Task Manager
2. Select Services tab
3. Click on open services
4. Right click on Internet Connection Services(ICS)
5. Click on stop

Now try again it you should be able to connect to VPN.

Attachment not working OWA/cannot upload file Outlook Web App

1.If you are using Google Chrome install Microsoft Silverlight on computer or as addon.
else
2.Switch to IE.
3.Update your web browsers.

Should work!

Skype login page opens in HTML format

Skype wont open correctly/HTML page:
Skype opens in HTML view while logging in, we have a following workaround to resolve the issue:1.Press Windows button+r or go to run and write "regedit" and press enter.
2.Then go to HKEY_CLASSSES_ROOT and find .css.
3. Under .css you will see CONTENT TYPE.
    Right click in Content Type and select modify and change this to text/css.
    Restart Skype.
Should be same as below screenshot.

Hope it helps.
Cheers!!!

A quick fix for "Call Of Duty MW3" Mouse cursor issue.

If you are facing issue while running "call of duty modern warfare 3" that your mouse cursor doesn't work on the screen then there is quick fix for it, which worked for me. Hope it works for you too.. good luck!!

Solution:
Once you have run COD MW3  press ALT+Tab or you can switch to any other window while the game is running. Then again press Alt+Tab to switch back to the game. You will see that the issue is resolved.

google talk hangs in windows 7 while setting status to "show the current music track"

Google talk hangs in windows 7 when I set my status "show the current music track"
FIX:Close winamp and Google Talk!!!!
Create one empty file and name it winamp.m3u copy that file into the winamp installation directory.
Start winamp and google talk.
Start playing music and set the status of Google talk to "Show the Current MUSIC Track"
You can download the m3u file creater from the below link
http://www.softpedia.com/progDownload/M3U-Creator-Download-18755.html
After installation just  press save and give the file name as winamp and place it in winamp installation folder.

Linux: Unable to compile or run C or C++ program

Linux uses gcc compiler for compiling C programs and g++ for C++ programs.If you are unable to compile or run C and C++ program in Linux terminal then follow these steps.
(1) Using vi or vim editor create a C file(should be named with .c extension) and do the same for the C++ program(should be saved as .cpp)
(2) Then compile C program using following command
$gcc -o destfile sourcefile
for example if you have created a file first.c then
$gcc -o first first.c

Your compiled file will be created as first.To run this file
$./first

For C++ use g++ command with same extensions.

If you are unable to compile or run C or C++ program OR you are getting error compiling C or C++ file that means you have not installed compiler gcc and g++ in your operating system.
Follow the steps for C:
$su

$yum install gcc

For C++
$yum install g++

This will install compilers for C and C++ for linux.I hope this will help you.

Linux:Unable to install or upgrade firefox in Linux

Installing or upgrading Firefox can be done by using different commands in Linux operating system..
(1) Using yum command you can upgrade your firefox or install.Open terminal and enter su then enter password. Now you are in admin mode so that you can install or upgrade firefox.
For installing anything in linux the user should be in admin mode.
syntax:
$su

$yum update firefox

(2)There is another way of installing firefox in linux that is by using wget command.To use wget command you should have link from where you can download firefox for linux.
Syntax:
$wget link

Application error: The memory could not be read.

This article applies to:

• Platform(s): Windows 98 , Windows ME , Windows 2000 , Windows XP , Windows 2003
• Browser(s): All Browsers
• Java version(s): 1.4.2_xx

---

SYMPTOMS

While attempting to install Java, a message box apears with the following error:

IKernel.exe - Application error

The Instruction at "0x771c741a" referenced memory at
"0x0..." (any number).

The memory could not be read.

Click on OK to terminate the program

CAUSE

The IKernel.exe application error may be due to one of the following reasons:

1. The InstallShield engine (iKernel.exe) or one of its component files in \Program Files\Common Files\InstallShield\Engine folder may be damaged, corrupted, or read-only.
2. The InstallShield engine (iKernel.exe) or one of its component files in \Program Files\Common Files\InstallShield\Engine folder was left on the system by an older version of the InstallShield installer (and is now incompatible with the version that Java Installer uses).
3. You are trying to install Java on a Windows XP machine with service pack 1 and Windows XP Hotfix Q328310 applied.

---

SOLUTION

Following are the possible resolutions for this error. Choose the appropriate method for your computer.

• Generic Solutions
1. Rename or remove the old InstallShield engine folder
2. Update InstallShield Engine

Generic Solution

Solution #1: Rename or remove the old InstallShield engine folder iKernel.exe is the InstallShield program file.

Java setup program copies InstallShield engine files to the hard disk during Java installation. These files are copied to the folder "C:\Program Files\Common Files\InstallShield". Assuming your system drive is C:. This InstallShield folder is used as a temporary folder by Java setup program. After you install the program, the contents of this folder are no longer needed or used.

The iKernel.exe application error may occur if the InstallShield engine (iKernel.exe) or one of its component files in "\Program Files\Common Files\InstallShield\Engine" folder is damaged, corrupt, or has read-only permission. This error may also occur if the InstallShield engine (iKernel.exe) or one of its component files in folder "\Program Files\Common Files\InstallShield\Engine" was left on the system by an older version of the InstallShield program. This is incompatible with the current version of InstallShield used by Java installer. The user should either rename or delete this folder and rerun the setup. The InstallShield installer will then replace or install the correct engine files if they are not found on the computer. To rename the InstallShield engine folder perform the following steps:

1. Launch Windows Explorer by right-clicking the Start menu on the system status bar and select Explorer. You can also invoke Windows Explorer by pressing Windows Key + E on your keyboard.
2. Browse to C:\Program Files\Common Files\InstallShield\Engine
3. Right-click the highlighted engine folder and select Delete.
4. Click Yes in the Confirm Folder Delete message box.

UPDATE Ikernel
Download the latest version of the iKernel engine by clicking the link below and save it to your Desktop. iKernel Update

Source:http://www.java.com/en/download/help/ikernel.xml