Frequent crashes. (Windows server often). Notes won’t launch. Can’t playback audio over speakers. Slow screen animations. Tried to start up in safe mode but won’t do it (or doesn’t display safe mode in menu bar). Of course it’s the first upgrade I’ve ever done without doing a backup before. I also tried to reinstall Tahoe once.
not uncertain if it is a factor but my battery is also toast. Only runs while plugged in.
MacBook Pro 16″, macOS 26.1
You can try running the third party app EtreCheck and posting the complete report here so we can examine it for possible clues.
How to use the Add Text Feature When Posting an EtreCheck Report - Apple Community
Tahoe does have a lot of visually related bugs as well as some other system related bugs which can affect memory & storage. I recommend rebooting Tahoe about once a week, or every other week at least until Apple sorts out the issues.
FYI, the quality of most third party Lithium batteries is extremely poor. The only vendors which tend to have better odds are OWC and iFixIt (just make sure to calibrate/exercise the battery on first use as directed to minimize the chance of issues). Also, this forum is full of posts where people damaged their laptop while attempting to replace the battery where the laptop was no longer usable.
The crashes would not be caused by a bad battery. That is either some other hardware issue, or an issue with some third party software that is installed.
I might suggest the same advise given my colleague @ HWTech
I am no Hard Ware Tech = a little fun with the colleagues name, who has been and remains my Go To for hardwares related issues 👍
Hope no offence my friend 🤞
Do run the suggested application and post the full report
Though, judging from the number of hardware issues thus far
Yes, there could be some Third Party software playing up which is exasperating the underlining hardware issues
I can get the battery done for $100. Don’t have the $1500+ to buy a new computer at this moment
As long as the Battery is an Official OEM Battery
Though, thinking Long Term as in Fall of 2026
" macOS Tahoe will be the last release for Intel-based Mac computers. Those systems will continue to receive security updates for 3 years. "
About the Rosetta translation environment | Apple Developer Documentation
Experiencing issues after Tahoe upgrade
