Within days after the Windows 10 was rolled out, a number of users reverted to older versions due to the issues they found with Microsoft's latest platform.

In addition, a new report released by security experts revealed that Windows 10 users have become the new target of hackers.

Microsoft officially launched Windows 10 on July 29 to millions of users around the globe. However, after installing it, many of them started experiencing problems with a few of its features. Out of frustration, some of them uninstalled the new version and went back to either Windows 7 or Windows 8.1, according to Mashable.

User Rick Page, who posted his rant on Twitter with #Windows10fail, noted that his computer crashed and rebooted several times when it was in sleep or hibernate mode.

He also experienced problems with Microsoft Edge, the new browser that replaced Internet Explorer. According to Page, the new browser doesn't play video content and takes a few minutes just to load sites.

Other users reported that the new Windows 10 doesn't run certain programs due to incompatibility issues. Like Page, user Anthony Donnelly also complained through Twitter that the new platform doesn't play the PC version of the game "Grand Theft Auto 3."

Another issue, which could turn into a major problem in the future, is Windows 10's automatic updates, Fox News reported. Since users of the new platform are required to install new updates once they arrive, they could become vulnerable to various firmware-related problems if these contain bugs and other glitches.

Of course, the follow-up update will most probably come with a patch but the whole concept of automatic and required software upgrades could frustrate users even more.

But, just when users think things couldn't get worse for Microsoft's latest operating system, a report by security researchers from tech firm Cisco Systems Inc. revealed that they are being targeted by hackers, ZDNet reported.

According to researcher Nick Biasini, hackers posing as Microsoft send emails to people to invite them to download the Windows 10 update. They entice victims by attaching an installer that will speed up the download process for the operating system. The hackers even use the address update@microsoft.com for sending malicious emails.

Once this attachment is opened, a malware known as Ransomware will encrypt the data of the computer and prevent the owner from accessing it.

The hackers would then force the user to pay a ransom, usually in the form of bitcoin, in exchange for a decryption key.

Cisco researchers strongly advised users to avoid clicking on suspicious messages even if they're about the Windows 10.