How to save 55$ for undelete software

You probably accidentally deleted some important files more then once. It is especially sensitive when it comes to photos from your family trip and when you deleting by instinct with SHIFT+Delete (avoiding Recycle Bin). I did that today and I needed some simple data recovery software. I remembered that there is File Scavenger who can restore accidentally deleted files and I installed it. Scanned the drive, found my photos and when I wanted to recover them I found out that I need to buy the licence for 55$. I didn’t like that so I decided to find free solution and found Recuva, free alternative for the same job. You don’t need commercial version and free version is just fine. It does the job perfectly!

eureka

Mscorsvw.exe high CPU usage on Windows Server 2012

I sometimes really hate Windows. When you do obligatory updates sometimes it takes hours for operating system to settle down and stop using CPU and memory like crazy.

One of these processes are mscorsvw.exe and ngen.exe which do some .NET assemblies optimization. I read about a lot of angry posts about these processes and that it takes hours “to optimize” and during these hours your server and services on it are suffering (and you need to be clever when finding explanations to your clients).

Follow these steps:

  1. Navigate to the following location in Windows Explorer: C:\Windows\Microsoft.NET\Framework\v4.0.30319
  2. Run an elevated command prompt and change the current directory to the following directory
  3. Type ngen.exe executequeueditems, and press ENTER
  4. Wait until you receive the following message at the command prompt: All compilation targets are up to date.

This annoying processes stopped but now TiWorker.exe is taking his time and eating the CPU and Memory and it looks like it will take 3-4 hours. Yikes! I really hate Windows programmers for this hidden background CPU and Memory eaters.

Can not connect to Remote Desktop Connection in Windows Server 2012R2

I faced today strange problem that I could not connect to Windows server through Remote Desktop Connection. When I click “Connect” it disconnect me immediately. Restarting the server didn’t helped.

Here is the simple trick how you can connect…

  1. Open RDC dialog and click on Show Options
  2. Go to Advanced tab  and choose under If server authentication fails option Connect and don’t warn me
    remote-desktop-connection
  3. You are now successfully connected after pressing the Connect button

Glad to hear if this saved you day. You can Tweet this solution so help someone else.

How to free space on Disk C

There are a lot of system stuff that just eat important space in Windows on disk C (if you have SSD and smaller C partition you don’t want to run out of space).

The best way is to create a junction (symbolic link) and to move some big folder to another partition (you need to have one first).

By doing this Windows will be fooled because you will get the same path but it will be shortcut (pointer) to another real location.

To do this move completely chosen folder to another partition and create symbolic link like this:

mklink /j c:\windows\MyMovedFolder d:\MyMovedStuff\MyMovedFolde

Remove annoying Get Windows 10 tray icon

  • Control Panel > Windows Update > Installed updates (at bottom left) -> find and remove KB3035583 (under Windows section) -> Restart computer
  • It can come again with next update so be careful and if you see it then right click on it (under Select the updates you want to install) and click Hide this update
  • As final check, see if you have a registry key HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Gwx and delete it.

Creating virtual host aliases under Apache

Sometimes you want to create folder alias for your website like this: /images to be mapped to /home/your_account/public_html/images.

To do this, you need to edit Apache httpd.conf file which is located at /etc/httpd/conf

It is clever to put all aliases in one file in the same directory and name them aliases.conf and then only to reference this file from httpd.conf.

You will include aliases.conf in httpd.conf like this:

<IfModule mod_alias.c>
    Include /Applications/MAMP/conf/apache/alias
</IfModule>

You define alias in aliases.conf file like this:

Alias /images /home/your_account/public_html/images
<Directory "/home/your_account/public_html/images">
    Options Indexes FollowSymLinks ExecCGI Includes
    AllowOverride All
    Order allow,deny
    Allow from all
</Directory>

Re-keying and Re-issuing MultiSAN SSL certificate in CPanel

I have lost 6 hours of my time when I was trying to add new MultiSAN SSL on server. We already used one and we just added one new SAN placeholder for one subdomain.

Server: CentOS Linux + CPanel

  1. Entered new SAN, using saved CSR and Re-issued the SSL certificate
  2. Went to http://panel.mydomain.com > SSL/TLS Manager and added the new SSL under SSL/TLS Manager > Certificates (CRT) > Generate, view, upload, or delete SSL certificates.
  3. Nothing helped because when I visited https://subdomain.mydomain.com it said that it is using old SSL certificate which has expired.
  4. Tried everything, Re-keying, generating new CSR, few times downloading newly prepared SSL certificate, editing Apache httpd.conf file but nothing help.
    install-ssl-certificate-in-cpanel
  5. After 6 hours I saw the last option: SSL/TLS Manager > Install and Manage SSL for your site (HTTPS) > Manage SSL sites. Uploaded there all three things:
    1. My SSL certificate
    2. Decoded private key
    3. My provider’s SSL certificate
  6. Restart Apache web server

Voila! It finally worked!

What unfriendly user interface where all 4 options are equal and it is not obvious what needs to be done. Or maybe, I am the exception. Tried 3rd option all the time.

Hate these things, but on the other side I learned something new and you will spare some time if you come to the similar problem. Hope, you will find this post quickly!

I definitely wrote this post also for myself, it was not the first time I was searching for some solution and Google listed me my blog post :-)

 

Cannot resolve %windir%

I faced once strange problem that somehow system environment variable %windir% could not be resolved.

This means that all shortcuts that are pointing to C:\Windows\System32 will not work.

You will not be able to set it directly by clicking with right mouse button on Computer icon and you will get this message

windir

To solve this just open this directly from Start > Run… and set this environment variable

c:\Windows\System32\systempropertiesadvanced.exe

In my case %windir% was pointing to undefined %SystemRoot% so I just added it and make it point to C:\Windows

This didn’t helped. After the research I found out that length of my %PATH% variable was more then 2048 chars.

It must be bellow 2048 chars and when I deleted non-important paths it started working OK!

Conclusion:

Keep your system variables less then 204 chars in length!

Hot to check if your Linux server is vulnerable regarding the BASH bug?

Just type this command in your SSH shell

$ env x='() { :;}; echo vulnerable' bash -c 'echo hello'

If you got this output then you are safe:
bash: warning: x: ignoring function definition attempt
bash: error importing function definition for `x'
hello

If you got this output then you are vulnerable and need to update:
vulnerable

Here is the tutorial how to do it:
http://brew.sh/

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