What are the Windows registry disadvantages using a registry cleaner?

The biggest disadvantage of Registry Cleaners is their weak distinction feature. Some Registry Cleaners fail to rate severity of errors and those succeeded erroneously categorized errors as critical without giving proper reason of categorization.

What are the limitations of Installing Registry Cleaners:

Most importantly, security critics claim that there is no authentic method to determine if third party software contains a valid key or contains useless information.

Some Registry keys fail to identify used and unused key for Windows and could not determine the effects of deleting used key from computer.

You can avoid the mentioned disadvantages if you use a proven tool that will ensure you get a fast Windows 7

The abovementioned flaw in Registry Cleaners create some worrisome situation such as malfunctioning of system, loss of functionality and accessing Microsofts application compatibility updates to prevent harmful Registry Cleaners.

Registry Cleaners fail to redeem scenarios like undeletable registry keys that occurred due to insertion of null characters in their names. However, there are few specialized tools available in the market, like RegDelNull utility and Sysinternals (now Microsoft), which could redeem such kinds of scenarios.

Recovery Power:

Registry Cleaner could not repair those Registry hives which couldnt be mounted by the system.

Despite all these problems, a corrupt registry can be recovered in several ways supported by Microsoft. For instance Automated System Recovery by using System Restore or by running setup from the Last Known Good boot menu.

Removal of Malware:

Despite all these problems, a corrupt registry can be recovered in several ways supported by Microsoft. For instance Automated System Recovery by using System Restore or by running setup from the Last Known Good boot menu.

Registry cleaners are unable to sense or flush out registry entries related to a rootkit that tends to conceal this fact from other procedures.

A specialized tool is needed to compare the results of Registry APIs with the raw underlying Registry storage.

Virtualization of application:

Registry Cleaners could not remove those Registry entries which are written for a virtualized application.