CCleaner for Windows 7: What to Delete and What Not to Touch

When using CCleaner on your Windows 7 machine, you may notice a plethora of registry entries flagged as 'obsolete software' or 'invalid firewall rules'. But before you start deleting them, it's essential to understand what these entries are and whether they can be safely removed.

One common question is whether the 'Obsolete Software' section can be deleted. If you uncheck this option, most of the entries will disappear. However, if you do decide to delete them, be aware that some may still remain after checking the box.

In our case, we recently deleted AOL from a computer and noticed an influx of 'Invalid Firewall Rules' showing up during scans. This is likely due to the removal of the software, which has left behind residual entries in the registry.

When it comes to registry entries found by CCleaner, some users have been warned against deleting them altogether. The reasoning is that CCleaner may not be compatible with Windows 7 64-Bit and could potentially delete files necessary for the operating system's functioning. This could result in rendering your computer unusable.

However, it's worth noting that these registry entries started appearing with previous versions of CCleaner as well. It seems that the new version has simply highlighted more entries than before.

In conclusion, while it may be tempting to delete all the registry entries found by CCleaner on your Windows 7 machine, it's crucial to exercise caution. Unless you're an advanced user or have a thorough understanding of your computer's inner workings, it's best to leave these entries alone and avoid any potential risks to your system.

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