I reinstalled on a Windows server and I don't have the problem...
I completely reinstalled on a new server with Debian 8 and I have the problem again.
On Windows 7 and Windows 10 clients.

Perfect, thank you.
I missed it in the documentation.

Hello,

I'm experiencing the same problem. I've noticed that even when it uninstalls cleanly, the following registry key isn't deleted:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{23170F69-40C1-2702-1604-000001000000}

As a result, we get this error:
Installing 7 ...

Hello,

is it possible to make the installation of a software package conditional on the presence of a program in the computer's software inventory?

Specifically, I have Trend Micro antivirus to install, with two possible scenarios:
1. Previous installation version 11.0.4778
-> execution of a utility...

Is there a solution to this problem?
Thank you.

To add to that, on wapt-starter, it does that on all packages...

I just tested with wapt-starter, same problem.

This might not be the same problem; the manifest.sha1 file is incorrect. Looking at the archive, it's a manifest.sha256 file

The same problem is present again.

Exactly the same problem.
The server and clients are on different VLANs, that's probably the cause.
Can this delay be configured?