Rob
Ansys Employee

We don't routinely issue old versions (and v17 is 7-8 years old now) but it may be available if you contact us directly: some Ansys offices have copies of the ISO-files or DVDs (note, that assumes we still have a drive in the building). There is no Student build for those versions. 

However, I strongly recommend updating to 2022R2 and then resolving why you didn't get a solution rather than trying old code.