When installing software, the lack of signature files often blocks the installation. In this case, first, confirm whether the software comes from a trusted source. It is not recommended to install software from unknown sources to prevent security risks.

If you confirm that the software is trustworthy, but the installation package still does not have a signature, you can try to change the installation source, because there may be a problem with the original source that causes the signature to be missing. Finding another reliable source and re-downloading can sometimes solve the problem.

If the above method does not work, manual installation is an option. You need to unzip it yourself, run the installation file, pay attention to the installation path, and guard against viruses. But please operate with caution and try to avoid it.

After all self-help measures have been tried, if the problem persists, it is wise to seek professional help. Provide details to the manufacturer or technical support, who can provide professional solutions.

The best way to prevent such problems is to remain vigilant, only download and run software from reliable sources, and regularly update system and security software to protect personal information and computer security. Avoiding random modifications to the system or downloading software from unknown sources is the key to avoiding this problem.

In general, although the unsigned installation package may cause trouble, through reasonable investigation and preventive measures, the problem can always be solved. Maintaining security awareness is the key to solving these types of problems.