Hey all - thanks for raising your hand in this thread. We’re reinvestigating the lingering z117 errors after the release of the game version 1.19.2 patch that fixed it for many Zwifters, but apparently not all.
Some of you have contacted Support and sent in your launcher log files. We’re investigating those and will update this thread when we have news to report.
I’ve been trying to install zwift on 2 computers that have not had zwift previously and I have been getting the line 602 z117 on each of them.
For those running into the z117 error during the game update process: please refer to this older discussion where a workaround was found. Please try this and report back with findings.
In the meantime, we are investigating the reoccurrence of the z117 error.
I managed to update Zwift thanks to both of your tips. But i cannot ride Wattopia, if i chouse wattopia, the program crashes.
But Thanks a lot for the tips!!
Not my tips! Glad you’re sorted with the update problem, but crashing isn’t good. 
I don’t know why Wattopia isnt working, but at least i can use Zwit again after a month. Thanks again 
I have not made any progress with the tips. Zwift support - can you please provide an update?
UPDATE Dec 30: Zwift game app v1.20.1 fixes the z117 error, and just released. Please update your game app at your earliest opportunity.
I am still not able to launch Zwift. I keep getting the same Z117 error. I have deleted all folders and still getting the same error. Went through all the suggestions also. I can use it on my Ipad, as a back up, but prefer using my PC to upload custom workouts and do my edits.
Hi @Ken_Page_Valhalla_Ra welcome to Zwift forums.
You may have some old files still gumming up the works. A complete uninstall / reinstall might help. There’s a way to do that without losing your personal best data and custom workouts. Instructions are here.
Would you try that and report back please? We’d like to know that solved it for you.
Still running into the same problem!
Still no luck. Same error message
I noticed that you are already in an email conversation with my Support colleagues. For one-on-one assistance, it’s best to continue via email. We’ll want to see the launcher logs stored on your computer to see what’s happening. Please follow the instructions that you were sent via email and we can help you figure it out!
Still the same problem for me too. Done a complete remove of everything and a new install and getting z117 at 602 problem. Really frustrating now. Having to use my mobile which is so small I can’t really do a great deal. Also only connects my smart turbo, no cadence or hr.
Please find a fix to this support.
Given the two reports of continued z117 errors and no reports confirming it’s fixed, we’re digging further into this bug and keeping this incident open.
In the meantime, let’s reiterate the workaround for Windows users:
Hi, followed those steps to no avail. Still not working. Zwift, please find the issue and release a proper fix asap. This looks like it’s been going on for a while now.
Edit:
I tried several more times, restarting my computer every time in between, and after about the third time it worked. Completely random. I have now lost 2 hours of my day. There has to be a better way than that.
I have also tried again after the new update - still not working with same error. I then tried a a complete re-install and that has also failed.
Zwift Support, please continue working on this error and release a proper fix very soon - long term customer here and ipad does not provide the same experience.
I’m having the same issue. When trying to install I get the following error code:
Error Code: Z117 at line 602 in Patcher.cpp
Turned off my Anti-Virus. Don’t have a google docs, Drop Box, or One Drive. I’ve uninstalled and reinstalled Zwift. Deleted all Zwift files under documents. Run as Administrator by right clicking Zwift Icon. None of these solve the problem. Very frustrating to be ready to work out and spend an hour troubleshooting with no success and apparently little to no support.
I was able to solve the Error Code: Z117 at line 602 in Patcher.cpp issue for the 12/30/2021 update.
Based on one of the recommendations above, I tethered my computer to my phone for the update. It loaded the 12/30/2021 update without the Z117 error. Hope this helps to troubleshoot the actual problem.
I started getting the Error Code Z117 at line 602 (not 601) yesterday. I tried uninstalling and re-installing with no success.
I’m getting it on both my laptops. This morning I tried copying the files from the Zwift folder in my downloads folder to my Program (x86)\ Zwift folder. I had two different outcomes.
Update on 2. I tried deleting the blink2w64 file, but then got the error code when trying to run Zwift “The code execution cannot proceed because blink2w64.dll was not found. Reinstalling the program may fix this problem.” Not that it made my Zwift work, but I re-added the Blink2w64 file from my downloads folder.
