Hi Martin,
This issue may occur if Windows Installer package (.msi) file is damaged or corrupted.
Is the issue specific while installing Java and Adobe products?
Method 1:
If you have not tried this steps already, I would suggest you to add Full Control permissions to Everyone group in the Permissions list of the default Temp folder.
a)Click Windows Key + R on the keyboard.
b) Type %temp% and hit Enter.
c)At the top of the Explorer window, in the address bar, click the folder to the left of Temp in the folder path (Local by default).
d)In the folder list, right-click the Temp folder and then click Properties. Then click the Security tab.
e)Click the Edit button and on the next screen click Add.
f)On the next screen, in the large text window type Everyone and then click Check Names. (Now Everyone should be underlined)
g)Check the box for Full control under the Allow column, and then click OK.
h) Then click OK and OK again to close all the windows.
Method 2:
If the issue persists, I would suggest you to check whether the Windows Installer service is running or not.
a. Right-click on Start button and click on Services.
b. Scroll down and find the Windows Installer. Double-click “Windows Installer” in the Services list.
c. On the General tab, make sure the service is started under “Service status”.
d. If the service is not running under Service status, click on Start and then click OK.
Method 3:
If the issue persists, I would suggest you to unregister and re-register the Windows Installer.
a)Click Windows Key + R on the keyboard.
b) In the "Open" box, type "msiexec /unreg", and then press ENTER.
c) Click Windows Key + R on the keyboard.
d) In the "Open" box, type "msiexec /regserver", and then press ENTER.
Check if the issue is resolved or not.
Hope this information helps. Reply to the post with updated status of the issue to assist you further.