Windows 7 to Windows 10

For Version 7.5 SP1, the clients were not picking up the attached USB license key. Setting Runtime to 2008 compatibility mode resolved this.

You can go to Aveva support and click on Technology Matrix to find compatibility. Select your version of Citect and it will tell you what versions of Windows it is compatible with. Or, select the version of Windows and it will tell you all the products that are compatible. There are multiple editions of Windows 10 and multiple versions of each edition, but for Windows 10 Enterprise x64 it is supposed to be compatible with Citect 2015 SP1 to 2018R2. It may be possible to get a slightly older version to work, but it may require figuring out work-arounds, certain features may not work, you may be able to upgrade Windows with Citect already installed but may not be able to re-install Citect when needed, and it won't be supported.

Note that you may need to upgrade Windows 10 to a specific version. For example, Citect 2018 R2 requires Windows 10 Build 1607 or higher.

So, check compatibility before upgrading clients and upgrade Citect to a compatible version first.

If you have parallel port keys - there is a cost to change them to USB or floating licenses.
We are in the process of upgrading Citect ver7.4 to 2018 R2. Replacing any old Win7 32 bit PCs with new Win 10 PCs.
But keeping any Win7 Pro 64 bit PCs.
Citect 2018R2 installs and runs fine on the new Win10 PCs.
Win7 Pro 64 bit - takes 4 reboots and some manual manipulation - but Citect 2018R2 eventually runs.
Still getting printers, automatic texts & emails, etc to work properly on Win10.
Win10 also has an inactivity timeout the logs the PC out. Any ideas on how to turn this feature off?

In compatibility matrix we see:
+Windows 10 1607 SAC Enterprise+
+Windows 10 2016 LTSC IoT Enterprise+
+Windows 10 Enterprise+

What abot Windows 10 Pro ?

In the Citect 2015 SP1 - 2018R2 readme files it doesn't specify Pro or Enterprise. It just says "Windows 10" or, in Citect 2018 R2:

· Windows® 10 version 1607 and later (64 bit only)
· Windows® 10 LTSC version 1607 and later (64 bit only)

I have read the link https://gcsresource.aveva.com/TechnologyMatrix/Report/Details?id=5927 and see the next list of operating systems:

I'm planing to by computers by HP which has installed Windows Pro only..... If compatible OS is Enterprise I will need to buy computers with FreeDOS and buy Win10 Enterprise ....

We have Citect 2018 R2 running just fine on Win10 Pro on HP mini PCs.
The worse part is uninstalling all the annoying HP software.