Mine started working again after I had tried all solutions above (apart from new account) and they had failed. I thought it may be the general issue that was mentioned above being solved but I see that is still under investigation.
so after reading some of these comments, I was determined this was 100% a Spotify issue. I’ve been wasting time fighting with Google Home support.
I have gone off/on premium as special offers come out. I’ve noticed that mine has been acting up a lot since I dropped my service from premium to free. I just activated my premium account and BOOM, issue fixed.
this leads me to believe there is a cache in my account within the Spotify servers.
as an IT person, I’ve flushed out my apps, devices, cache, etc. it’s not my home. There is something acting up with our accounts at Spotify.
We're happy to hear that at the end you managed to resolve your issues with Spotify and Google Home. We want to reassure you that we take the utmost care for all accounts across all free and Premium services that we offer. However it's possible that individual account face certain issues that can be resolved by creating a new one. We understand how this can cause an inconvenience and suggest it only after everything else has been tried. To ease the process we've posted these instructions on how to transfer your library, so that nothing gets lost.
To everyone experiencing similar issues we've gathered all steps that have worked for users so far and ask you to first try these out:
unlink and relink Spotify with your Google Home app. You can find instructions on how to do this here or in @Guido's post
try using a different networks, such as a mobile hotspot. If it works there reach out to your ISP about possible restrictions of your internet network
perform a clean reinstall of both your Spotify and Google Home app, as the file integrity could be compromised and causing such issues. This Spotify Answer can help with that.
perform a factory reset on all devices and ensure that they are running the latest firmware and fully up to date
Hope this is helpful for you. If you have questions, you know where to find us.
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“Music is a language that doesn’t speak in particular words. It speaks in emotions, and if it’s in the bones, it’s in the bones.” - Keith Richards
This really is shocking. Do Spotify realise how much time it takes for factory resets etc. The app is buggy and over the years I have problem after problem, pan devices and family accounts. I have tried all the methods bar factory reset and cannot get Spotify to work with Google home in multiple devices. It did work fine and just stopped. How would a factory reset fix that. Please sort out the app. I only stay with you to appease my teenage kids.
Google nest mini won’t play anything from Spotify. It says we’re having problems with that every time. I’ve unlinked and linked back. Still does it. I can’t unlink a default music provider. Also, I frequently need to start Google Nest from scratch. I am constantly disconnected- like I don’t even have an account. The speaker is just a couple feet from our router. Spotify no longer play my liked songs or any artist radio. I’ve unlinked and linked. I’ve even did a factory reset. It says “playing your liked songs” or “playing Frank Sinatra (or any artist”, and then nothing happens. My Google Home app and Alexa app say it’s playing but the speakers are completely silent. I see many people have these same issues. The solutions Spotify gives don’t do a thing. At this point, my question is Why don’t you care. Aren’t you losing many customers over this issue. I like Spotify otherwise, but why can’t play my library on either of these speakers. I used to be able to.