It has come to our attention that in major upgrades for Windows 10 the Product Key ID is changed. This ID is a part of the algorithm used for generating the Installation ID, that is then used when generating a licenses for our products. Due to this, a major upgrade for Windows 10 will result in the license to be invalid (since the Installation ID which the license is generated with differs from the Installation ID of the machine).
As a consequence to this we have removed the use of the Product Key ID when generating the Installation ID.
SourceTech Presence Service >= 18.104.22.168 validates license both with and without the Product ID. With this change a license generated for <=22.214.171.124 (found in a existing installation) will still be considered to be valid until the Product ID is changed again.
A license that is generated based on the Installation ID in Presence Service >=126.96.36.199 will not be affected by future changes of the Product Key ID, since this is removed from the algorithm.
We recommend that licenses is regenerated when upgrading to SourceTech Presence Service => 188.8.131.52