Major I/O write bytes on the Spotify Desktop app. It will kill SSD drives in record time (fixed)

EDIT: According to Spotify this issue has been fixed in the 1.0.42 version so the case has been closed. Personally I have no more issues with this anymore on any computer. Thanks everyone for making this happen !!!


original post:
Major disk write activity detected on the Windows/Mac app. Does not behave like that when using the browser player.

Please look into this thread, more details there:


Attached readouts from a Win7/64 PC during one hour and ten minutes. No offline playlist syncs and zero songs were played during that hour, only the spotify app tray active in background!

No disk drive, SSD or standard HDD can take that rate for a long period of time.




Thank you for bringing this issue to our attention. As some of you have noted, the prior version of the Spotify desktop client may sometimes have caused unnecessary data to be written to storage devices. This issue has been fixed in the current version of the desktop client (1.0.42), released November 11th, and rolled out to all our users. If you try to run an older version, you will see it automatically restart and update to the new version shortly after you log in.
If for some reason you should encounter problems with the auto update, just follow these steps to perform a full reinstall.

If you're running a deprecated OS (Windows XP, Vista; OS X 10.7, 10.8), don't worry. A fix has automatically been rolled out to you too. To ensure you're running this version, just close/reopen the desktop app twice.

Again, we greatly appreciate your help here, and hope that you will continue to flag issues for us when they arise.

On Windows, that VACUUM; command is in a file named libcef.dll.

That file is coming from the Chromium Framework, but it's probably just used as a wrapper around SQLite. The data stored in the mercury.db file is actually Spotify's, not Chromium's.


Hallo,das funktioniert so nicht! Den Cache auf ein anderes Laufwerk "umbiegen" bringt nichts!Beim nächsten Start ist alles beim alten auch wenn man in Spotify angewiesen hat wo der Cachespeicher zu finden ist.

Schickt man Fragen an Spotify bekommt man NIE Antworten!!


And once again, music pirates are the winners, honest customers are losers and treated like idiots. Spotity is such an incapable and arrogant company!


I am affected by the bursts every few minutes. In the past 8 hours, Spotify wrote about 25GB to my drive.

Size of mercury.db is 89MB in my case.


And once again, music pirates are the winners, honest customers are losers and treated like idiots. Spotity is such an incapable and arrogant company!


Hi shirantrixi,

i don't know how you tried to redirect the Spotify Cache to another drive (the thread is quite extensive...), but you could use a Windows "junction" instead of using the settings in the Spotify application. See for more information on this topic. Junctions are working fine for me since I created them for Spotify and some other applications on my PC some months ago because my SSD was running out of space.


Hallo shirantrixi,

ich weiß nicht genau, auf welche Weise du versucht hast, den Cache-Speicherort umzubiegen (der Thread ist mittlerweile recht umfangreich...), aber du kannst eine Windows "Junction" nutzen, um das zu tun. Siehe auch zu dem Thema, was das ist. Mit Junctions funktioniert das bei mir seit einigen Monaten super, seit ich welche für Spotify und andere Anwendungen eingerichtet habe (auf meiner SSD ging mir der Speicherplatz aus)



TheSeven: Thanks for pointing me to the correct file for Windows. I edited it and that seems to have worked wonderfully.


I have the same problem on Windows.

Measured with Proccess Monitor Sporify did 320000 Read and write operations on a track switch(on files: mercury.db, mercury.db-wal, and in the Temp folder a file called etilqs_8kagr8xIE0dLTL5). This is terrible for SSDs. The appdata\local\spotify folder was 3.7GB before and after this test. The mercury.db was 40MB before and after this test.

It uses the VACUUM; command( is probably causing the thousands of reads and writes).




is it possibly that the same thing happen in the android app?

Because my phone only have an internal that would be terrible


I will write a little and easy tutorial for the workaround solution that Kallizm told us based on the mklink he posted. 


It looks complicated but it isn´t. You will just tell windows to use a path on C: but in reality you use the space from the second harddrive.

I will not take responsibility if anything goes wrong!



As several user mentioned this fix is not a workaround for the main problem. I am sorry i thought i have wrote a good solution but nahhhh 😜

This option is still usefull because it writes the cache on the second hardrive rather the SSD.


Sorry Arkanius, but this doesn't solve it. The files that are the problem here are mercury.db, mercury.db-wal and %temp%\etilqs_*
Each of them gets around 30% of the write traffic, so fixing the first two (which are easier to redirect) would already remove 60% of the SSD traffic, but wouldn't completely fix it either.


I´v updated the tutorial to include the whole spotify folder including mercury.db
and mercury.db-wal
 to catch the writing to ~60%



  • Another Disk where you can store the Spotify files
  • Tutorial is written based on the standard installation path


  1. Navigate to second Harddisk
    2016-11-09 19_47_36-Dieser PC.png
  2. Create a folder name it as you like
  3. Navigate into the empty folder
  4. Copy the PATH from the folder into notepad
    (to do that, click on a free space next to the Breadcrumb)
    2016-11-09 19_49_37-SpotifyCache.png
    1. In my case it is E:\SpotifyCache
  5. Stop Spotify
  6. Press WINDOWS + R to open the RUN command
  7. Type C:\Users\%username%\AppData\Local\Spotify and press OK
    2016-11-09 21_11_53-Ausführen.png
  8. Copy all data from C:\Users\%username%\AppData\Local\Spotify to the new created folder on the second Hardrive.
  9. Delete the whole Spotify folder located on C:\Users\%username%\AppData\Local\
  10. Press WINDWOS + R and run the command CMD to start the command prompt
    2016-11-09 20_06_09-Ausführen.png
  11. Type or copy in this command
    mklink /j "C:\Users\%username%\AppData\Local\Spotify" PathToNewFolder and press enter
    1. In my case it was 
      mklink /j "C:\Users\%username%\AppData\Local\Spotify" E:\SpotifyCache
  12. It should tell you something like
    Connection established for C:\Users\%username%\AppData\Local\Spotify <<===>> E:\SpotifyCache
  13. There should be a shortcut icon now 
    2016-11-09 21_15_20-Local.png
  14. Now you are done and can start spotify 🙂


Everything that is now saved in the Spotify Folder on C: is stored on the second harddrive.