Our upgrade went pretty smoothly. Much to my pleasure we had nearly zero issues with Host Checker upgrading (like we did after 6.4 upgrade) so that alone made it worth while. One thing to note that we didn't fully notice until the upgrade-- Juniper changed the way their software asks permission from the end user to install/upgrade/run. Now you'll get a small prompt window that will ask permission to run. Luckily there's an "Always" option too so you can accept it once and forget about it which is nice. The one major issue we had will most likely not affect most other users since it's specific to Secure Virtual Workspace. For some reason the VPN components (HC, WSAM, etc) are unable to install / upgrade properly if it is done within the SVW environment. For example Host Checker would redownload the "UnifiedSDK.zip" up to 4x everytime SVW was launched. We also found WSAM would fail to operate properly as well in some cases. This only impacted about 10% of our userbase that use SVW, but when you've got a total of about 200 users it's noticable. I just found a workaround for this, and that was to purge Juniper software from the end user's machine and have them reinstall everything through a sign-in URL that didn't use SVW. After that they're perfectly fine. I will note, however, that I cannot say that this is an issue only with 6.5... I'm pretty sure previous versions had this same issue but it just became more obvious of an issue now after the upgrade and us not focusing on Host Checker problems. Pretty sure UnifiedSDK.zip always redownloaded multiple times in SVW in versions past. So overall I'd call our upgrade to 6.5R3.1 a success, it is already worlds better than 6.4, but the SVW issues muddied what otherwise would have been a very pain free upgrade.
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