Sorry, we had an API issue during request [ERROR CODE: 9999]

[scenarist]

Hello friends,

I restarted harmony server and after that I can't login via web browser.

I got this error: "Sorry, we had an API issue during request [ERROR CODE: 9999]". 

any suggestions ?

[CP-Shark · Accepted solution]

This is quite annoying and we are having the same issues every few days.
Restart via cpstop and cpstart resolves it. You can try deactivating the WebUI service via SmartEndpoint.

Hope this helps.

[scenarist · Accepted solution]

Commands cpstop and cpstart didn't resolve above error.

I fixed it with restart web services in expert mode with command web_mgmt_stop and web_mgmt_start.

[the_rock]

Thanks for those commands, good to know.

Andy

[the_rock]

What @CP-Shark said is 100% true. You can reach  out to TAC to see if there is more permanent solution.

Andy