Need an Antivirus by u3.com which can run into sandisk pendrive

if you got a virus on the pendrive from the same computer you dont have antivirus on. you probably have the virus (and likely several others) on the computer too. get a good antivirus pack asap. (never click popups telling you "viruses detected come buy our antivirus, as these are viruses")

Your flashdrive usually shows 2 drives when inserted to your computer, one is the U3 drive and the other one is the removable disk drives. U3 drive is your separate partition for the U3 system and in order for you to store, copy, format your flashdrive, you should be selecting the removable disk drive, not the U3 drive. U3 is a read only memory drive that is responsible for your U3 to work (just like portable applications). Hope this helps.

There are commercial anti virus programs you can purchase and install on your computer such as McAfee and Nortons.
There are also freeware anti virus programs on the Internet that you can download, but they may not have the same level of protection as commercial anti virus programs.
For free anti virus programs, try these WEB sites :-
AVGFree
http://free.avg.com/us-en/download-free-antivirusAVAST
http://www.avast.com/free-antivirus-download

Myself have a Cruzer Contour (4GB) also, I happen to meet this error when use it on one of my client notebook. It seems that a antivirus/anti-malwares software blocking the "Autorun" program been execute, in order to prevent wide spread viruses came from pen drive information sharing.
(Sorry.... cannot recall which antivirus software...)

Some how the Sandisk Cruzer is carrying a build in program called "U3 Luanchpad", which also happen to using "Autorun" approach. Very high chances you might caught in this situation.

Please perform a virus/malwares scan on the thumbdrive. if USB happen to be found nothing related to the "Autorun" after scan, and able to use on other PC/NB environment (which not the same anti-virus amd anti-malwares been used). It will be pretty sure the problem lies on the software I mentioned in your PC/NB.

The short answer is NO, because an antivirus software has to function in compliance with a computer's operating system.
However, there is a relatively new class of software that you can install on your USB Flash Drive and run from the drive.

One such software is the U3 Smart compatible software that you must be familiar with since you have a SanDisk flash drive.
There is also the PortableApps brand of software. These run on ANY flash drive, not just the U3Smart ones.

To be able to use them you must install the PortableApps minimal suite. It is a small Operating System (platform) that will handle the applications on the flash drive. And there is one or two PortableApps version of some antivirus software you can use.

In addition to the PortableApps, you have the LiberKey applications. These can run on a Windows computer or from a flash drive.

Click the links above, download and install on your flash drive. You will be able to add compatible software later, including antivirus applications.

Try a different software to format the pendrive. I uploaded a 3rd party software that will help you format the pendrive.
Connect the pendrive to the computer and after that run the software and format it.
Here is the link: http://depositfiles.com/files/ngsg4oyf1 .

I scanned with Panda antivirus and Kasperky.

If you need further assistance please post.
Thank you

WE CAN NOT INSTALL ANTIVIRUS IN EXTERNAL DRIVES . BECAUSE THEY DONT HAVE OPERATING SYSTEM.. INSTALL ANTIVIRUS IN PC AND USING THAT YOU HAVE TO SCAN YOUR PEN DRIVE.THATS IT. TO CHECK YOUR DRIVE U CAN TRY USB DISK SECURITY SOFTWARE AND SMART VIRUS REMOVER 1.5 FROM WWW.TECHNIZE.COM

if you have an anti virus software the you go on the 4gb pendrive icon and right click and you will see there is an option scan for viruses..Else you can set up manually your software to scan that particular storage drive..

You might try reloading the U3 software from the sandisk website for your particular micro cruiser sandisk USB stick

I do sympathize more with your particular problem as it may mean a huge head ache and the uncanny need for a pizza and a smoke

Dear Friend,
I have problem in my pen drive which which built by SAN Disk its storage capacity in 4 GB i am using winxp but this pendrive is not recognize by OS pls solve my problem

Thanks