Hello!

I try to install hotfix 4 on newly installed step 7 v 5.7 and get error "The file RS.EXE has an invalid signature. Installation cannot be continued." . Reinstalling step 7 does not fix this error. The same error if you install hotfix 1 and 3

Hi Andreywys,

Something may have gone wrong during the Hotfix download. First, I would try to re-download the Hotfix again from the SIOS, disabling the PC's antivirus in case it is corrupting the file during the download.

Then, I would recommend running the .exe by right clicking > Run as administrator (antivirus off for now).

If it doesn't work, I would recommend installing the corresponding Microsoft Updates so the certificates are up to date.

I hope that helps!

itafusna

What is your OS? Have you verified that it is released to install STEP 7 V5.7, with or without Hotfix?

 Windows 10 pro build 19044

About windows build have no information. In the description of HF have no information about supported OS. I think is same of  STEP 7 V5.7

We had the same issue, we got it solved by disabling the following GPO:

Computer Configuration\Administrative Templates\System\Internet Communication Management\Internet Communication settings\Turn off Automatic Root Certificate Update

This was set as enabled in our GPO, after disabling it, the installation was able to start.

It work! Thank you!