<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">For users of Parallels 17: Parallels Tools may be broken for macOS guests, with the latest version released over the past few days (17.1.3).<div class=""><br class=""></div><div class="">Specifically, there appear to be issues with the signatures for their kexts, for macOS releases between 10.10 through 10.15. (10.9 and earlier seem OK, as do Big Sur and Monterey.)</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div class="">$ sudo bash -c 'for f in /Library/Extensions/prl_*.kext ; do printf "\nChecking kext ${f}:\n" ; kextutil -t "${f}" ; done'</div></div><div class=""><div class=""><br class=""></div></div><div class=""><div class="">Checking kext/Library/Extensions/prl_eth.kext:</div></div><div class=""><div class="">Diagnostics for /Library/Extensions/prl_eth.kext:</div></div><div class=""><div class="">Code Signing Failure: code signature is invalid</div></div><div class=""><div class="">ERROR: invalid signature for com.parallels.kext.eth, will not load</div></div><div class=""><div class=""><br class=""></div></div><div class=""><div class="">Checking kext /Library/Extensions/prl_tg.kext:</div></div><div class=""><div class="">Diagnostics for /Library/Extensions/prl_tg.kext:</div></div><div class=""><div class="">Code Signing Failure: code signature is invalid</div></div><div class=""><div class="">ERROR: invalid signature for com.parallels.kext.tg, will not load</div></div><div class=""><div class=""><br class=""></div></div><div class=""><div class="">Checking kext /Library/Extensions/prl_video.kext:</div></div><div class=""><div class="">Diagnostics for /Library/Extensions/prl_video.kext:</div></div><div class=""><div class="">Code Signing Failure: code signature is invalid</div></div><div class=""><div class="">ERROR: invalid signature for com. parallels.kext.video, will not load</div></div></blockquote><span id="x-apple-selection:end"></span><div class=""><br class=""></div><div class="">As for non-macOS guests like Windows and Linux, some brief checks suggests those might be fine. Though my testing was far from conclusive, so don't take that as the gospel.</div><div class=""><br class=""></div><div class="">But if you’re using Parallels 17 to virtualize macOS guests - particularly if you have any VMs running 10.10 through 10.15 - you might want to avoid updating at the moment.</div><div class=""><br class=""></div><div class="">Lastly, I’ve posted about this on the Parallels forum, via the following thread. Don’t hesitate to subscribe to it for updates, and/or chime in if you’ve already updated to 17.1.3.</div><div class=""><br class=""></div><div class=""><a href="https://forum.parallels.com/threads/version-17-1-3-parallels-tools-kernel-extensions-broken.357547/" class="">https://forum.parallels.com/threads/version-17-1-3-parallels-tools-kernel-extensions-broken.357547/</a></div><div class=""><br class=""></div><div class="">Cheers,</div><div class="">-Chris</div></body></html>