@ichabod92
Greetings!
Welcome to the HP Support Community. This is a great place to get support, find answers and tips to your technical queries. I have reviewed your post and I understand, there's an issue with the "Optimizing App" error.
Let's try these steps -
Step 1 Hard Reset -
Press and hold down the power button for more than eight seconds. After the tablet fully shuts down, wait a few seconds, and then press the power button to turn on the tablet.
Step 2 Force stop the app, Wipe Cache and Data -
1) Go to Settings. Then navigate to Apps and find the tab for All.
2) Select Google Play Services and then go to FORCE STOP and stop the app. Then choose CLEAR CACHE
Step 3 Re-add the Google Account -
1) Go to Settings. Then choose Accounts.
2) Then select the account and then select the menu option or the 3 vertical dots located at the top-right of the screen. Then click on Remove account.
3) Reboot the tab and re-add the account.
If the issue still persists, try resetting the tab. Refer to this document for steps.
Hope this helps!
Let me know how that goes.
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Have a great day ahead 🙂
Asmita
I am an HP Employee