(Last Updated On: October 22, 2019)

This is very fearful error who is new to android platform. no matter Its Marshmellow, Nougot, Lollipop, Kitkat.  Don’t think more, Think that this is also normal error message. But some times this go to far. that case, you have to go advance solutions Like a flash Rom. But you don’t need to fear because you are in right place. Go down and go step by step and solve your installing and updating problem. Note – We have advance solutions and normal solutions first try normal solutions and if it does not work then go to advance solutions

Authentication required on Samsung galaxy C7 Pro

  • Go into Settings
  • remove the google acount and sign another one
  • Go into Applications Manager
  • swipe left for All Apps.
  • Scroll down and find Play store and tap on it.
  • Clear Cache, then Clear Data after that Tap on Force Stop.
  • Reboot your phone. (restart the phone)

 insufficient storage available on Samsung galaxy C7 Pro

  • Go into Settings in your phone
  • Go into Applications Manager
  • swipe left for All Apps.
  • Scroll down and find Play store and tap on it.
  • Clear Cache, then Clear Data after that Tap on Force Stop.
  • Reboot your phone. 
  • IF not works then reset your phone or put a Memory chip

Its says Downloading but not 

  • Check your data balance first. If it is ok then try below tips
  • Turn on Data and Turn ON data or WIFI. If it is not work then try below tips
  • Go into Settings in your phone
  • Go into Applications Manager
  • Scroll down and find Play store and tap on it.
  • Clear Cache, then Clear Data after that Tap on Force Stop.
  • Reboot your phone. 


Other all Google Playstore error messages

you can use below methods to solve these errors – Error rpc: s-3Error: , Error 921  , Error 940 Error-06 BM-GVHD Error 941 Error 944 Error 961 Error 963 Error 497 Error 498 Error 501 Error 194  Error 481 Error 504 Error 505 Error 495 Error 905 Error 906  Error 975   error DF-DLA-15 error Rpc Error 403 Error 406, Error 413 error: AEC: 0Error rh01 / rpc: s-5: AEC-0 Recovery error Error 492  Error 907   Error “Package file invalid” Error 8 Error 18 Error 20 Error 24 Error 101 Error 103 Error 923  Error 110  Error 491  Error 911 Error 924 Error 927 Error 919 Error 920 Error DF-BPA-09 DF-BPA-30, Apps Downloading but not installing , “No connection”, “Error retrieving information from server. [RPC:S-7:AEC-0], “Connection timed out”



How to fix apps does not install or update on Samsung galaxy C7 Pro

Some times your phone’s playstore has got itself into a bit of mess. Most of “installing updating failed” , “phone Does not work installing or updating” , “unfortunately google play service has stopped” error messages comes because of this case. So, you have to refresh playstore. To refresh,

  • Go into Settings
  • Go into Applications Manager
  • swipe left for All Apps.
  • Scroll down and find Play store and tap on it.
  • Clear Cache, then Clear Data after that Tap on Force Stop.
  • Reboot your phone. (restart the phone)

after doing above method, problem persist then go down

Turn off the phone for 5 min.

This method can help for all small errors of androids. Please Turn Off your Samsung galaxy C7 Pro. after Turn OFF, remove the phone battery and wait 5 min. and Insert the battery again and Turn ON the phone by pressing Power Button. See whether camera is Work or Not. IF not, then Go to below step.


Wipe cache on Samsung galaxy phone

Most of camera problems happen because phone’s Cache. So you have to delete that Cache from your phone. Don’t worry. There is no big deal or any DATA Lose. We only Delete phone Caches. Now please Follow me step by step. after Restarting, Check whether camera is Works or NOT. 

we have dedicated Wiping Cache posts. Click here

I can't Install or update apps on Samsung galaxy
I can’t Install or update apps on Samsung galaxy

  Please Don’t Turn OFF the phone while Wiping.

1.Turn off the phone.
2.Press and hold the Volume up key, Home key and Power key till appear Android LOGO.
3.Now, you are on Recovery Menu. Choose the “wipe your phone” from that menu.
4. Confirm It.
5.Reboot the phone.


Factory Reset Samsung galaxy C7 Pro

Above methods didn’t help? Then Reset your phone. that means, Restore your phone to Factory Setting. and This cause to Lose all DATA on phone.So, we recommend to get Backup (get all data to computer by one Click  – contacts, MSGS, Whatspp viber History, Photos, Videos, MP3 etc – Click here) before perform Factory Reset to your phone.

Reset Sound is BIG?  Don’t worry we have dedicated Reset post. Click here

Reset my phone

1.Turn off the phone.
2.Press and hold the Volume up key, Home key and Power key till appear Android LOGO.
3.Now, you are on Recovery Menu. Choose the “factory reset” from that menu.
4. Choose “Yes — Delete All User Data option” by pressing power button
5.After performed Reset, Reboot the phone.


Final Solution for “apps does not install or update on Samsung galaxy C7 Pro

all above methods didn’t help? then This is the last one.. When you face this kind of problem in computer, like virus affection badly or system error, then your last method is Installing Windows again. Stock Rom is like a Windows..

There are 2 type of Rom. One is Stock Rom and second one is Custom Rom. If you install Custom Rom it break your Warranty. Stock Rom is Official Rom. we have dedicated posts about flashing Stock Rom to Samsung galaxy C7 Pro..


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