Lightroom CC won't open after install

[Jo 22]

I have a CC subscription, and I have just installed the new update for Lightroom CC.  It shows that it is installed, and "up to date" in the CC window, but it won't open.  Do I need to uninstall Lightroom 5 first?

[Qua_Fotografie · Accepted solution]

See my reaction on today. This must work.

[Qua_Fotografie]

This works:

Start LR5 and sign out for sync with LR mobile (iPad en iPhone signout automatic)

Start Photoshop CC and sign out by " help"

Now go to Creative Cloud app and click on LR CC 2015. See what happens: it is working. Good luck everybody.

[Shutterop]

Worked perfectly!  Thanks!

[Jo 22]

Thank you!  This worked for me. 

[jimpoyner]

Many thanks, worked for me.  SIgned out of LR via Help, signed into CC, clicked LRCC on the apps list and we're off.

[maxg84705188]

I have the same problem, but I've already uninstalled LR5.  I opened and signed out of Photoshop but it's not working at all.

[tallblue]

Same here. I uninstalled LR5. Sign out as above, then click LR CC. Mine worked after signing in again. Good luck.