Bluetooth not available on Mac

Unfortunately, I continue to have this problem, even after updating to 10.13.3.

After my computer goes to sleep, Bluetooth is not available. Becomes available again after restart. The terminal: restart Bluetooth instructions also work, but sleep removes the service.

I have no USB peripherals.

Thanks Barry.

This solved the issue for me. I tried deleting the .plist file and rebooting. But it only resolved after resetting the SMC. I didn't have to reset the NVRAM, but that would have been my next step.

Just adding my voice to frustration over this issue. I drove a 2-hr round trip to my nearest Apple Store at Apple Support's suggestion. The Genius Bar people didn't seem to be aware of any issues, and suggested replacing my keyboard. That meant repeating the 2-hour drive a week later because they had no keyboard stock! I will try the suggestions here and report back if anything works.

Equipment: iMac 2017 (4 months old). Problem started after High Sierra update. Symptom: Bluetooth keyboard unresponsive. Sometimes I can re-connect the keyboard from Bluetooth symbol in menu bar; sometimes Bluetooth is 'not available' and only solution is a re-start.

I am glad that terminal series worked for you.

However, for anyone else reading this thread, I STRONGLY suggest that you NOT use terminal commands unless your are a very experienced user. Those commands can (and do) cause serious system problems if you make a typing error.

Barry

I have a late 2011 27" iMac. As soon as I upgraded to High Sierra I have no bluetooth. It doesn't even appear in the system report. I hired a tech to replace the bluetooth module, he did and checked all the wiring and connections but Mac still would not recognize the bluetooth. I am having to rely on a dongle which reduces the number of available USB ports. Apple, you apparently have an issue with bluetooth and High Sierra on some machines. Your fixes don't resolve the issue. Look deeper and give us a reasonable solution. We pay good money for these products and expect them to work as well as expect you to acknowledge and remedy issues. Please get on this. It's aggravating.

For anyone else experiencing this problem as of this posting-try the following-it worked for me.

http://osxdaily.com/2010/03/24/when-and-how-to-reset-your-mac-system-management- controller-smc/

SMC Reset (Systems Management Controller)

http://osxdaily.com/2010/03/24/when-and-how-to-reset-your-mac-system-management- controller-smc/

On the MacBook / Pro's keyboard, hold down the Shift+Control+Option keys and the Power button at the same time. Release all keys and the power button at the same time – the little light on the MagSafe adapter may change colors briefly to indicate the SMChas reset. Boot your Mac as usual.

its always something my bluetooth says not available all of a sudden i did a SMC reset, did a diagnostic nothing shows wrong hardware wise. so i think it is software related anyone have any other suggestions how to fix this i been on this for 2 hours now and just noticed it out of the blue when trying to copy and paste it did not even show the files that was mentioned in this reply in the library/preference for the bluetooth profiles to delete. the bluetooth options are totally gone i can't even see them in my system preference as if the computer is not bluetooth capable for me to use. it just shows a zig zag line like its not even recognizing the hardware.

Fantastic! This fixed the problem for me (mid 2010 macbook running 10.11.6). For anyone worried about "serious system problems" or whatever caused by mis-typing commands into Terminal, just cut and paste mirko's recipe one line at a time. Easy as pie. Thanks!

I agree, I tried everything and I still have the same issue. Apple is useless on this matter! You pay a lot of money for those machines and they don't fix issues like this one that is happening from many many months now!

The fact that none at Apple support knows a **** about the issue, that it can’t be fixed in a robust way and that none from Apple has come here to help says a lot.

I’m done with iOS. Yesterday I purchased a Huawei P Smart for my kid (it was supposed to be an iPhone 6) and you know what? It rocks!

I managed to find an old wired mouse but unfortunately I dont have wired keyboard so can’t type the admin password to delete the plist.

Been happening all day today and had to restart multiple times to get my bluetooth working again.

Sigh

Same here that I have replaced everything earlier but the issue is still there. I brought it to Apple Store for service again telling them the issue is still there and after a few days of service, or simply observation I guess, they told me that there wasn't such issue and refuse to carry on for further investigation and threaten me that they will trash my computer if I don't take it back in 30 days. Actually the support guy who called me on this was having a very terrible tone and I was so ******.

I am still in conversation with the hotline support engineer who is way more professional in certain sense. However, it seems to me that he couldn't do much but suggested me to upgrade to Mojave and see if the bug is still there. Eventually I upgraded the OS and the bluetooth issue happens much frequently. This morning alone I need to restart the machines 3 times until I can gain the bluetooth connectivity. And it keeps disconnecting so frequent that that now I need to use 2 cables for connecting my devices or I am not able to use the computer at all. Even restarting the computer won't help as it can disconnect anytime.

I will be in conversation with the backend support again in the next few days and see what else can be done then.

Thanks hail to the thief and I tried your suggestion but no luck. The bluetooth disappeared completely a few times a day (even now) that some times I need to restart 3 or 4 times until getting my bluetooth module back on my task bar. And the connectivity drops a few times a day that I need to have 2 thunder cables standby rather than spending huge amount of time on this tiny task to gain my control back. I will be in touch with the Apple technical guy again tomorrow and will forward him the bug report as you suggested. So stay tuned!

I have the same problems with a completely new iMac 27 with Mojave. I have even sent it back to the store because I needed to rebeoot the iMac at least twice in order to see the bluetooth device (the internal one). And apart from this, the keyboard, nouse and trackpad disconnects sometimes only for seconds... and other times for longer ime until I co nnect trackpad with a cable and restart the bluetooth device. And, as I said, I even had to rebootr the iMac twice becuase it did not recognize its internal bluetooth device..... At this momento I am waiting for an answer from the store but.... Should I understand that this is going to keep on happening even with a new iMac if the store change it for a new one ?

Thanks this worked! (at least for now!) Very frustrating that this issue is weeks old and Apple has not addressed it!