Mohamad Alhussein:
Mine as well, i have Win10 Ent laptop and no other laptop, can we rely on the compatibility check or we will encounter other issues later on during the exam ? I went through the above links and passed all of them as well
Wai Yan Pyae Sone:
> Please note that system check before exam and PSI bridge software during actual exam are different things. If system check pass, it does not mean that PSI bridge will work too.
@Mohit Kumar @Mohamad Alhussein
Please use the Operating Systems that PSI support and it saves you a lot of nerves that you may need. I gave my exam with Ubuntu 22.04 LTS which is not in the list and had to reschedule in the past.
system compatibility check passed 
PSI browser did not launch
Mohamad Alhussein:
@Wai Yan Pyae Sone if it works for Killer.sh then we can say it will work in the exam? (because both environments use the same software as i know) This is really a big issue as i don’t have other laptop other than the one running Win10 Enterprise. It does not make sense also that there is a difference between PRO and ENT for the PSI bridge software, not sure really how the compatibility tests were done. is there any other way to contact LF to double check this point ?
Mohit Kumar:
yes. checking with LF would be good idea.
Mohit Kumar:
What is the rule if PSI doesn’t launch…Am I be entitled to reschedule or would it be failed attempt?
Wai Yan Pyae Sone:
In my case LF generously allowed me to reschedule the exam.
Mohamad Alhussein:
@Wai Yan Pyae Sone did you experience that same issue of PRO vs. Enterprise ? and then the PSI software didn’t run in the the exam ?
Mohamad Alhussein:
Thank you @Wai Yan Pyae Sone just one point plz, when you experienced this issue, you were trying from Win 10 Enterperise or from another unsupported OS which is different from the license issue we have (PRO: supported, ENT: unsupported) ?
Wai Yan Pyae Sone:
> did you experience that same issue of PRO vs. Enterprise ? and then the PSI software didn’t run in the exam?
I gave my exam with Win 10 Pro after i reschedule it and can’t really say about Enterprise.
Wai Yan Pyae Sone:
> you were trying from Win 10 Enterperise or from another unsupported OS which is different from the license issue we have (PRO: supported, ENT: unsupported) ?
I tried with Ubuntu 22.04 LTS (Linux Os) and had to reschedule the exam.
Mohit Kumar:
do you think as mentioned one the page 18.04 will work? If it is free then I can install it on spare laptop
Mohit Kumar:
I meant Ubuntu OS
Wai Yan Pyae Sone:
I would suggest you to contact to LF to make sure that. It might be hard to understand but I can’t guarantee that 18.04 and 20.04 will work even if they are in the supported list.
Mohit Kumar:
Thanks Wai!!
@Mohamad Alhussein I have raised a query with LF will let you know what they say about Enterprise OS
Kalesha Gagguturu:
I also had similar confuse before taking exam after seeing the guidelines of psi requirement, but I took my exam with windows 11 enterprise 22H2 / 21H2 on 22nd Jan and i didn’t faced any issue.
I can suggest to check with psi May give clarity about the same
Mohit Kumar:
@Kalesha Gagguturu your’s is office laptop?
Kalesha Gagguturu:
Yes
It’s office laptop but I had disconnected all vpns before taking the exam. Also it depends on your organization policies on your device
Mohamad Alhussein:
Thank you very much guys, @Mohit Kumar Please keep us updated so that we know what we expect 
Alistair Mackay:
FWIW, I have successfully taken 3 LF exams with the following configuration
Edition Windows 10 Enterprise
Version 21H2
OS build 19044.2486
Experience Windows Feature Experience Pack 120.2212.4190.0
DISCLAIMER: It is not officially supported so I cannot make any guarantee that it will also work for you, however if it is a corporate machine you are using:
• You must have full administrator access to it so that you can stop any program or service that PSI Bridge wants you to.
• You should not use corporate network or VPN in case any required ports are blocked.