After I upgrade to 4.51, my old and new target did come online. But it only shows Data available on target. Did not see any data coming in. Even I click analyse data, there is no data. If I do a live session, there is no issue. But I am not able to see normal data like keylogger. The only change I did on the server is upgrade to 4.51 and also remove the software win32openssl software on my agent desktop.

Check that the relay hash value of 4.50 and 4.51 are the same. Did not upgrade the relay to 4.51. Do I need to upgrade the relay from 4.50 to 4.51?

If I want to test again whether the issue is 4.51, by reinstalling 4.50 ggi on the master and proxy server, will that work? Will that downgrade to 4.50?