CCleaner cannot be installed - it can be because of it

There are various reasons why the free CCleaner system optimization software cannot be installed. We will show you which solutions fix the installation error.

CCleaner cannot be installed - causes and solutions

The installation routine of the CCleaner is actually quite simple. Nevertheless errors can occur.

• You must be logged on with administrator rights to install the CCleaner software from Windows 7. If this is not the case, you will receive an error message during installation.
• Cancel the installation and log in as administrator before restarting the installation.
• You will also receive an error message during the installation if an earlier version of the software is already installed and open.
• You can solve this problem by closing the open CCleaner and starting the installation again.
• We explain in a tutorial how CCleaner works.

If the installation was successful, but the CCleaner does not start, you will find the solution to this problem in the next practical tip.