Error "0x80070057-00000000-00000000" while sending calender invites through Outlook Client

User complains he is receiving error  "0x80070057-00000000-00000000" when he sends out calender invites.

You should try 2 options

1) Uncheck "use cached exchange mode"

2) Download new copy of "Global Address list"

Note : If the user who the invite has been sent is not in the Global address list and within your personal contact list then you may avoid this step. (there is no harm in doing this step either ways)

Have you come across this error, how did you solve the issue please share your experience.

Exchange Powershell command to find all groups in your Microsoft Online Exchange 365.. !!!

click start -> start typing powershell ->

and run the Powershell Microsoft Online services module as administrator

Run the command "Get-MsolGroup --all > c:\msolgroup2.txt"

Breaking the code :

Get-msolgroup -all will get all the data to your screen and > will redirect it to a file.txt.

Do share with us know if you have a better way of getting this done.


Note : Please try the command at your own risk, the owner of this blog takes no responsibility for anything that may go wrong on your exchange server.

Check Email forwarding using Powershell !!!

Being a system admin is not only about the doing the Job but doing it efficiently.

This post will show you how to find out users who have email forwarding to to any person within the exchange server.

1) Open the exchange power shell.

2) Type the following command.

Get-Mailbox -Filter {ForwardingAddress -ne $null} | ft Name,ForwardingAddress,DeliverToMailboxAndForward -Autosize

Breaking the code :-

• Get-mailbox module :- is used to find out the information within the mailbox.
• Filter {ForwardingAddress -ne $null} :- filters the output with an forwarding emailaddress is not equal to $null (no empty)
•  ft Name,ForwardingAddress,DeliverToMailboxAndForward : again filter the output with only these columns (name, Forwarding address, deliver to mailbox and forward).
•  -Autosize : if your output is too big, the full output is not shown and items that are over a certain entry are not shown, to avoid this and to output all details we use -autosize
• you can also re-direct this output from the screen to a file using 'Export-CSV' parameter. 
• e.g.  Get-Mailbox -Filter {ForwardingAddress -ne $null} | ft Name,ForwardingAddress,DeliverToMailboxAndForward -Autosize | Export-CSV g:\Email_forwarding_output.csv

Note : Please try the command at your own risk, the owner of this blog takes no responsibility for anything that may go wrong on your exchange server.

Getting to know whats under the hood without taking a machine appart. (2 default tools, 1 3rd party free tool)

If you are a person who is fed up of opening a machine just to checking the Motherboard / RAM / Graphic card / Etc attached to it... this article is for you ....

There are 2 default options in Windows and i have also mentioned a free tool at the end of this post.

1) Check using DirectX

Start - > Run, type "dxdiag"

Short Forms... Secrets Finally Revealed.. !!!

I have read a lot of short forms and in IT we tend to use a lot of them. What exactly do they mean.?? 

here is the Secrets Finally Revealed..!!!

This post is not intended at offending anyone and is for knowledge only.. Please read at your own discretion.



IMO = In My Opinion
BTW = By The Way
GG = Good Game
BM & GM = Bad Manner and Good Manner
FU = Fuck You
FYI = For Your Information
AKA = Also Known As
LOL = Laugh Out Loud
ROLF = Roll Over Laughing
ROFL - Rolling on floor laughing
LMAO = Laugh My Ass Off :P

10 Important tools for a System Administrator (Free Tools) - Part1

Here are some tools that i have come across, that a system administrator would use on a daily basis to either work with or tools that will help solve some issue that will make our life a little more simpler. while these tools may help a system administrator they will never replace him as it helps us work more efficiently nothing more..  nothing less :P

1) Cleaning tool :

I'm sure you must have used this tool or seen someone talking about this one,  "Ccleaner" would be one of the most useful tools around to Cleanup all the junk on your machine. It clears Temp application files, Temp Internet files, etc.

It can also clean unwanted registry entries, Please  backup registry before performing the registry cleanup

Download Ccleaner

2) Uninstaller -

Tools that will help you remove that programe that has been irritating you but you could on remove it use with "Revo Uninstaller" or "Microsoft - Fix it"

Download Revo Uninstaller Free
Download Microsoft Fix it Install and Uninstall

3) Remote Connection - Team Viewer / Amy admin are the tools that are You may notice that  i have not mentioned RDC (that is only accessible within the domain/network)

Download Teamviewer
Download Ammyy

4) Telnet / SSH

Putty is widely used tool to login into Linux / Unix machines. If you would like to go command line, this is the tool for you.

Download Putty

5) VNC Server / VNC Viewer :

VNC is virtual network controller, this helps in monitoring / maintaining machines remotely. server needs to be installed on the machine you need access to and the viewer is used to connect to the

Download TightVNC