SharePoint 2013 Apps Issue: Server Error in ‘/’ Application - The resource cannot be found - HTTP 404.

Hello Friends,


I am Sandeep. I had setup the SharePoint 2013 server farm and created App Catalog site, App Domain and App prefix in the "Apps" section in SharePoint 2013 Central Administration.
Then I added the App into App Catalog site and tried to open the App link, hence I got the below error message.

Server Error in ‘/’ Application.
The resource cannot be found.

Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Requested URL:


Reference Screenshot for the Error Message:

Solution:

I found the good article from one of the SharePoint guy and it is really a simple solution to fix this issue.

1. Create a new Web-Application with the SharePoint server name on port 80 without host-header name.
2. Create a Root Level Site collection for the above Web-Application without mentioning any Managed paths as: /sites/apps/.

Then it will START working without the below error message.


Note: You can delete the Server named Web-Application after few days when the App's are started working.


Please find the below link for your reference.
http://absolute-sharepoint.com/2013/02/troubleshooting-setting-up-an-environment-for-apps-for-sharepoint-2013.html 

SharePoint 2010: Microsoft Excel has stopped working: A problem caused the program to stop working correctly. Please close the program.

Microsoft Excel has stopped working: A problem caused the program to stop working correctly. Please close the program.


Error Screenshot:


Solution:
1. Delete the Temporary Internet files, Cookies and website data, History, Download History, Form data, password, Tracking Protection.
2. Add the SharePoint site URL into Trusted sites list.
3. Modify the IE browser settings in the Security Settings.

Explanation:
1. Delete the Temporary Internet files, Cookies and website data, History, Download History, Form data, password, Tracking Protection.

• Open the IE browser --> Go to Tools --> Internet Options --> in General tab, find the Delete.. button.
• Click the check-boxes: Temporary Internet files, Cookies and website data, History, Download History, Form data, password, Tracking Protection.
• Click Delete button to delete the selected items. (see the below screenshot)

 

2. Add the SharePoint site URL into Trusted sites list.

• Open the SharePoint site with IE browser.
• Go to the Tools menu in the IE browser --> In the drop-down menu, select Internet Options.
• Go to Security tab --> click Trusted sites --> click Sites button.
• Add the SharePoint site URL in the place ‘Add this website to the zone’.(Ignore if the site URL is automatically present in the box)
• Un-check the box ‘Required server verification (https:) for all sites in this zone’ --> click Add button click Close button to close the windows.

3. Modify the IE browser settings in the Security Settings.

• Open the SharePoint site with IE browser.
• Go to the Tools menu in the IE browser --> In the drop-down menu, select Internet Options.
• Go to Security tab --> click Trusted sites --> In the bottom, see and click Custom level.. button.

• Under the ActiveX controls and plug-ins --> find the Allow Scriptlets --> Enable it.

• Under the Miscellaneous section --> find the Access data sources across domains --> Enable it.

• Under the Miscellaneous section --> find the Display mixed content  --> Enable it.

• Click OK and YES and OK to come out from the IE browser options window.
• Close the IE browser and re-open the IE browser and login to the SharePoint site and try to open the Excel, Word documents stored in your SharePoint site.

Hope the issue got resolved by following these steps...!!!