Update via TMS Subscription Manager failed

VCL TMS VCL UI Pack
1

I want to do Updates with the Subscription Mananger. If i push the button Update i get the message: 

Filesize incorrect. Restart Subscription Manager and retry. 

Can anyone help me? 
2

Can you try to
disable software that can interfere with an internet connection like a
Firewall, proxy, antivirus.

3

which port is used?

4

The installer makes a HTTP connection via port 80 to http://www.tmssoftware.com/

5

port 80 to http://www.tmssoftware.com/    is open

no proxy and antivirus disabled
but it doesn't work
6

Can you try to directly download the product from the “My products” page after login on our website?

7

yes ... it works

8

If a file got corrupt in the cache, you could also try to delete files under

C:\Users\USERNAME\AppData\Local\tmssoftware\PRODUCTNAME
9

i deleted all but it doesn't work

10

If you are sure that no antivirus, proxy, firewall, websecurity software is interfering, try to use a (free) HTTP analyzer tool like Fiddler to analyze why the installer can't download the file.

11

I have same problem on Win XP, But Windows 10 no this problem!

12

Can you check with a free tool like Fiddler https://www.telerik.com/fiddler what is happening to the HTTP requests performed from TMS Subscription Manager?