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EV9 FSA Agent - Install Failure - ISSCRIPT

SYMAJ
Level 6
Partner Accredited

I have upgraded an EV7.5 installation to EV8SP5, both FSA and Exchange.  There are 5 file servers involved in the FSA configuration, and I upgraded the FSA agent on one server only.  This was due to a reboot being required following upgrade - and as I was upgrading to EV9 shortly after I decided to leave the other 4 servers.  All worked fine with the one I upgraded and rebooted.

Following the EV9 upgrade I attempted to upgrade the remaining 4 file servers from the 7.5 FSA AGent to EV9SP3 FSA Agent.  ALL of the 4 servers failed the upgrade with the same error.  I tried both install from with the VAC and also a local install on each file server - same results - each failed and rolled back.  The message I am seeing in EV Installation Log is near the end, and is as follows:

 ISSCRIPT_VERSION_MISSING = The InstallScript engine is missing from this machine. If available, please run ISScript.msi, or contact your support personnel for further assistance.

I see many references to this message regarding installations of various software products, but nothing relevant for EV.  I didn't try to install EV8SP5 on these remaining 4 servers, would that of worked ?  Is it an issue with installing EV9SP3 FSA Agent over the EV7.5 agent, it seems strange that the one I picked at random for the EV8SP5 upgrade wotked OK.

Any advice welcome.

AJ 

6 REPLIES 6

JesusWept3
Level 6
Partner Accredited Certified

What version of windows you installing on?
Also take a look at this
http://www.symantec.com/business/support/index?page=content&id=TECH183302

i also saw some references to MSI vs EXE with UAC enabled, you may need to just right click and do Run As Administrator

https://www.linkedin.com/in/alex-allen-turl-07370146

Rob_Brenner
Level 5
Employee

I'm not sure but perhaps the 9.0.x Agent binaries don't have the logic to upgrade a 7.5.x agent.

It might be worth trying to upgrade the agent to 8.0.x first and see how things are handled.

Otherwise I would suggest to manually un-install the FSA Agent from one system and then try the push install with 9.0.x 

SYMAJ
Level 6
Partner Accredited

WIndows is W2K3 SP2 - so no UAC issues.

I saw that technote - it is specific to System Recovery and none of these entries are in place on my fileservers.

I considered trying the EV8SP5 upgrade (which worked on one file server last week) - but as it was late didn't attempt it last night. The other option of uninstalling the EV7 Agent and trying a fresh install of EV9SP3 was also considered, however I was concerned that if I couldn't get the EV9SP3 agent on I would be left with a system with no functioning agent (at least it is all working OK at present). !

I would have expected that EV9SP3 could update EV7.5 binaries, but I guess if we have to step EV server through 8 to get to 9 maybe the upgrade of the FSA Agent isn't supported (although don't see it noted anywhere)

AJ

JesusWept3
Level 6
Partner Accredited Certified
I Know it's a different product but the concept is still the same, just a differen product name But agree with rob, uninstall and reinstall, especially since its only 4 servers
https://www.linkedin.com/in/alex-allen-turl-07370146

Rob_Brenner
Level 5
Employee

It's strange that you have this on all 4 file servers.

The web results for the error you reported seem to relate to Install Shield.

e.g. http://www.symantec.com/business/support/index?page=content&id=TECH50669

and http://social.technet.microsoft.com/Forums/en-US/configmgrosd/thread/7bf2221c-03ff-4a55-b9fd-32ebaef...

I would still suggest to manually un-install the Agent from at least one system, and then try installing the 9.0.x.

 

 

SYMAJ
Level 6
Partner Accredited

I will do this and report back (still have a little fear as to what happens if I cannot get ANY agent back onto the file server.....).

May try and upgrade the one I moved to EV8SP5 already up to EV9SP3 and see if that goes OK ??

AJ