Why am I unable to install apps on my Lumia 520 after updating it to Windows phone 8.1?

[Manish Mishra2]

Unable to install apps on Lumia 520 after updating it to windows phone 8.1

Recently I have updated my Lumia 520 to windows phone 8.1
Now i'm unable to install apps.
For the Apps which were installed earlier in my phone,updating the same again and even installing after uninstalling the app is now not possible.

But installing the app which was never installed before is possible.

Please provide a valid solution for this issue.

 

[ca_guri]

Re: Unable to install apps on Lumia 520 after updating it to windows phone 8.1

Go for hard reset, it will solve your all problems.