6 Replies Latest reply: Dec 7, 2017 3:48 PM by aaron.leung RSS

Cisco Spark app won't launch


After installing Spark and going through the initial email address verification, the Spark app imply won't launch. Nothing happens whatsoever when clicking the launcher. I called Cisco support but that wasn't helpful. Apparently the executable modifies a text file called sparklauncher.txt. Inside it there is a line "Spark executable beside launcher is backlisted". Support indicated that communication to the head end is blocked so the rest of the software isn't installed? They sent me a Network Requirements doc Network Requirements for Cisco Spark Services (... | Cisco Cloud Collaboration Help Central. But in checking that, there is nothing preventing communication outside. It seems to be a design flaw in Spark that there isn't more useful info upon failure to load. Any thoughts?

  • 1. Re: Cisco Spark app won't launch

    I've removed the proxy from the equation so it isn't interfering. I've also insured any udp/5004 is allowed out the firewall. When I run Wireshark while attempting to launch CiscoSpark, I see no traffic to udp/5004 nor tcp/5004. There is absolutely nothing that I can see that is causing a communication problem. I suspect that the Spark app does not install correctly so the firewall is a non-issue. Isn't there some sort of debug feature that can be enabled that might provide a clue as to why Spark doesn't even launch?

  • 2. Re: Cisco Spark app won't launch

    Very odd. I finally got the app to launch. I had to uninstall, then browse the installation directories. There was still a directory left "Cisco Spark" that contained a file called "launched.dat". It wasn't until deleting that, then reinstalling the app that the launcher would work.

  • 3. Re: Cisco Spark app won't launch

    I had the same issue, I found that when the installer ran, it did not update windows firewall.  So I uninstalled the application, deleted the launch.dat file, deleted the directory.  Did a clean install, de-selected launch SPARK, on the last install dialog box, hit finish.  Opened control panel, and added SPARK.exe manually to both public and private connections.  Went back and launched SPARK and it worked.

  • 4. Re: Cisco Spark app won't launch

    deleting "launched.dat" and reinstalling the app.. worked for me too.

  • 5. Re: Cisco Spark app won't launch

    Deleting the file was all I had to do, I didn't even uninstall first.

  • 6. Re: Cisco Spark app won't launch

    I've had a similar problem but the launched.dat doesn't seem to fix, Win7x64 (thanks IT!).  Spark was working, but I had a diskspace issue and was looking for quick, large file deletes and so most likely my fault!


    My sparklauncher.txt gives this error. 


    Cisco spark launcher started, location: C:\Users\c890698\AppData\Local\Programs\Cisco Spark\CiscoSpark.exe, launcher version: 2.0.7056.0

    Spark executable beside launcher is backlisted: 2.0.7056.0

    Found 0 further possible locations for Spark installations.

    Could not find any Spark executables, giving up.

    Exiting launcher.


    No amount of scrubbing on reinstall seem to be able to fix this so that the system will download the correct launcher.  Not on official IT support but I use this on a client site!