Cant open market app

Try to force close the messaging app in your settings > Apps and then open again and see if it still occurs. Could also try downloading a different messaging app to see if there is something wrong with the stock app. Are you on Sprint I'm guessing? What make/model phone?

There is not one sure solution for these market related android errors and you'll have to try a bunch of fixes to fix these errors and chances are that the errors will come back and you'd have to repeat the process. The 911 error mostly occurs when you are trying to update your apps in the Google play store while connected to a faulty wifi network.

Method 1: Clear the Google Play store data

• Go to Settings >> Manage Applications or Apps >> Open "All" tab
• From the list of "All" apps >> Scroll Down and Select "Play Store" >> Select Force stop, Clear cache and Clear data

Method 2: If you are using a wifi connection that requires a webpage login, then your authentication has probably expired. Log in to the APN again via your android browser. Open Google Play store and run the app update again . If that didn't work the problem is with the wifi network itself.

Method 3: Simply switch to another Wifi network and run the update. The error 911 should disappear for the new Wifi network.

Method 4: Use your mobile network data services instead of wifi. Turn wifi off and then turn your data on and now open your Google Play Store and download/update your apps or games. However, this method is only suited for apps and games that are small sized. For larger updates you should use your wifi network to save data charge.

You may have run out of memory. Delete some of the apps you already have and try again.

Fixing RPC:S-5:AEC-0 Google Play Store Error

The Google Play / Android Market error retrieving information from server RPC:S-5:AEC-0 error message can be a bit of a pain, the RPC:S-5:AEC-0 error just randomly appeared on my tablet after it upgraded to a newer version of Android. However this is how i managed to fix the RPC:S-5:AEC-0 error with ease.

1. Load the Settings app, click apps, then select "All"
2. Next in the all apps view find the "Google Play Store" and click on it
3. Now click "Clear Cache" (Not Data), then Force Stop.
4. Next in the same app list find "Google Service Framework"
5. Click clear data (Not Cache), then Force Stop
6. Switch off the phone or tablet and turn it back on
7. You should be able to download and update apps from the Google Play store once more.

Enjoy no more RPC:S-5:AEC-0 errors when downloading or updating apps.
Or Simply Go to settings/app.manager/all
Delete data + cache :
Google Play Store
Google Play-services
Google Services Framework
Hangouts
Market-feedback agent (important)
Then delete google-account(data/system/user/0/ fine the accounts.db file and cut and paste it somewhere else)
Restart the phone and then re-add google-account( paste your accounts.db file earlier to it's original location).
p/s~Your device need to be rooted to remove/delete google account without a factory reset.

enjoy and have a good day :)

1. Settings
2. Personal: Accounts and Sync
3. Selected my Google account
4. Once within my Google account, clicking on the context menu/settings menu I selected "Remove Account"
5. Once the account was removed it prompted and asked for a new account, I entered the credentials for the same account and then rebooted
6. Once it rebooted I went to the Market, accepted the EULA and downloaded Google Gesture (I wanted to try a free app first) without any issues!

well what you should do is turn the phone off and remove the battery for about 2-3 min.. replace the battery then, try to launch the market app again.. now if that does not work and it continues to crash it may be a defect with the original loading of the app from the manufacturer, because market app is pre- installed on the device before consumer contact... so if its a app you downloaded from market app thats different but if its the actual app market app then you need to take the phone back to where you purchased it and if they cant do a master reset they may need to replace the device if they cant take the bug out of the market app..

hope this works..

If you go into the android market, click the menu key and then click downloads, next to cardio trainer if it says update click on the app and then click update, as this may solve the problem.

Also trying a simple battery pull, leaving the battery out for around 30second and testing the cardio trainer app again.

If that does not work, it may be worth trying to unistall and reinstall the application by going to the android market, click menu and downloads, selecting the cardio trainer app and then click unistall. Then reinstall and try again.

Yeah that happened to me as well. You could try deleting the actual app and reinstalling it, you don't have to create a new account for that or you could not use it for a few hours and then when you go on it again it may work. The waiting worked for me.

some applications may hog the network, stop all applications, and then try it. I had GPS and a craigslist app causing those problems

If you need further help, I’m available over the phone at https://www.6ya.com/expert/robert_573a00ba7e399076

I suggest go to Start/Settings/Control Panel/Add remove programs.
Check and see if the program is in list and remove it. While in control panel go to system/Device Drivers check non have a yellow mark on them if so reinstall drivers or upgrade Reboot and try again.