Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported.

SharePoint 2007 custom (VS 2008) solution is upgraded to SharePoint 2013 using (VS 2012). I followed this approach.
I had created new empty project (solution) in SharePoint 2013 using (VS 2012) compiled and deployed successfully. All safe controls are registered in the web.config file. After deploying solution i Restarted IIS also, still getting this error. How to resolve
Error
Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type could not be found or it is not registered as safe. Correlation ID: 5d217c9c-1827-7083-80cd-e095a30befee.
Show Error Details
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[UnsafeControlException: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type could not be found or it is not registered as safe.]
at Microsoft.SharePoint.ApplicationRuntime.SafeControls.GetTypeFromGuid(Boolean isAppWeb, Guid guid, Guid solutionId, Nullable`1 solutionWebId, String assemblyFullName, String typeFullName, Boolean throwIfNotSafe)
at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)
<menu class="ms-hide" id="MSOMenu_WebPartMenu"><ie:menuitem id="MSOMenu_Minimize" text="Minimize" title="Collapse this web part." type="option"></ie:menuitem><ie:menuitem
id="MSOMenu_Restore" text="Restore" title="Expand this web part." type="option"></ie:menuitem><ie:menuitem id="MSOMenu_Close" text="Close" title="Close this Web Part. You can still
find it under closed Web Parts section in the insert ribbon. These changes will apply to all users." type="option"></ie:menuitem><ie:menuitem iconsrc="/_layouts/15/images/DelItem.gif" id="MSOMenu_Delete" text="Delete"
title="Delete this Web Part from the page. These changes will apply to all users." type="option"></ie:menuitem><ie:menuitem type="separator"></ie:menuitem><ie:menuitem iconsrc="/_layouts/15/images/EditItem.gif"
id="MSOMenu_Edit" text="Edit Web Part" title="Change properties of this shared Web Part. These changes will apply to all users." type="option"></ie:menuitem><ie:menuitem id="MSOMenu_Connections"
text="Connections" title="Show connections options for this Web Part. These changes will apply to all users." type="option"></ie:menuitem><ie:menuitem type="separator"></ie:menuitem><ie:menuitem
id="MSOMenu_Export" text="Export..." title="Export this Web Part. These changes will apply to all users." type="option"></ie:menuitem><ie:menuitem iconsrc="/_layouts/15/images/HelpIcon.gif" id="MSOMenu_Help"
style="display:none;" text="Help" type="option"></ie:menuitem> </menu>

Hi Ashok,
According to your description, my understanding is that you got an error after you re-built a SharePoint 2007 solution with VS2012, and deployed it.
Make sure the Namespace and Type Name are consistent across all files where indicated. Also with matching case sensitivity. Verify web.config file and assembly in GAC or virtual directory bin folder in post deployment.
More information, please refer to the link below:
http://roykimsharepoint.wordpress.com/2013/04/27/classic-web-part-errors/
Here is a similar post for you to take a look at:
http://stackoverflow.com/questions/1689707/sharepoint-web-part-type-could-not-be-found-registered-as-safe
I hope this helps.
Thanks,
Wendy
Wendy Li
TechNet Community Support

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Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type could not be found or it is not registered as safe.

We have an SharePoint services 3.0 installation that uses custom web parts on 100s of subsites. The custom web parts on any website is presenting this error
Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type could not be found or it is not registered as safe.
This past weekend we decided to create a new database server and migrate the databases to the new server in an effort to retire an old box.
INitially we attempted to go through the configuration wizard which didnt do anything but add a new database server to our farm. What we have done is remove the new database server from the farm and use an alias on the SP server to continue to use
the same name but actually get its data from the new database server.
Everything works with the site except these custom webparts.
Any thoughts on where to go to first, should i redeploy what i think are the webparts from VS 2005 (solutions are VS 2005 slns.)?
Tony Spaulding

You need to make Safe Control enteries in your web.config for the particular web application.
Open web.config
Locate the SafeControls Tag
Make a safe control entry
<SafeControl Assembly="Assembly name, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d8eb6481d8b4beec" Namespace="your webpart namespace" TypeName="*" Safe="True" />
In order to find the assembly details, Open the GAC. Right click on your dll and then click properties.

A webpart or web form control on this page cannot be displayed or imported.The type could not be found or it is not registered as safe.

Hi,
After moving my files from SP 2010 to SP 2013 , for all my web parts i am getting A webpart or web form control on this page cannot be displayed or imported.The type could not be found or it is not registered as safe. error. I checked web.config files
and they are there as safe control and trust level is also full.
These webparts work in 2010.
Do i need to tweak something in code or distributed cache to make this thing work? The errors i see are
Error importing WebPart. Assembly c , Version=1.0.0.0, Culture=neutral, PublicKeyToken=216eaf49984a9b29, TypeName. C. A Web Part or Web Form Control on this Page cannot be displayed or imported. The type c Version=1.0.0.0, Culture=neutral, PublicKeyToken=216eaf49984a9b29
could not be found or it is not registered as safe.
Getting Error Message for Exception Microsoft.SharePoint.ApplicationRuntime.SafeControls+UnsafeControlException: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type C Version=1.0.0.0, Culture=neutral, PublicKeyToken=216eaf49984a9b29
could not be found or it is not registered as safe.
at Microsoft.SharePoint.WebPartPages.WebPartImporter.CreateWebPart(Boolean clearConnections)
at Microsoft.SharePoint.WebPartPages.WebPartImporter.Import(SPWebPartManager manager, XmlReader reader, Boolean clearConnections, Uri webPartPageUri, SPWeb spWeb)
at Microsoft.SharePoint.WebPartPages.WebPartGalleryItemBase.InstantiateFromXml(XmlReader reader)
at Microsoft.SharePoint.WebPartPages.WebPartAdder.SiteWebPartGalleryProvider.SiteWebPartGalleryItem.Instantiate()
at Microsoft.SharePoint.WebPartPages.WebPartGallerySourceBase.AddItemToPage(WebPartZoneBase zone, Int32 zoneIndex, WebPartGalleryItem item, String wpid)
at Microsoft.SharePoint.WebPartPages.WebPartAdder.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
An error occurred while attempting to add the gallery item [Custom] c to the page. The error was: Microsoft.SharePoint.ApplicationRuntime.SafeControls+UnsafeControlException: A Web Part or Web Form Control on this Page cannot be displayed or imported. The
type c Version=1.0.0.0, Culture=neutral, PublicKeyToken=216eaf49984a9b29 could not be found or it is not registered as safe.
at Microsoft.SharePoint.WebPartPages.WebPartImporter.CreateWebPart(Boolean clearConnections)
at Microsoft.SharePoint.WebPartPages.WebPartImporter.Import(SPWebPartManager manager, XmlReader reader, Boolean clearConnections, Uri webPartPageUri, SPWeb spWeb)
at Microsoft.SharePoint.WebPartPages.WebPartGalleryItemBase.InstantiateFromXml(XmlReader reader)
at Microsoft.SharePoint.WebPartPages.WebPartAdder.SiteWebPartGalleryProvider.SiteWebPartGalleryItem.Instantiate()
at Microsoft.SharePoint.WebPartPages.WebPartGallerySourceBase.AddItemToPage(WebPartZoneBase zone, Int32 zoneIndex, WebPartGalleryItem item, String wpid)
Adit

Hi Adit,
According to your description, my understanding is that the error occurred when you deployed the .wsp files to SharePoint 2013.
I recommend to check if all the assemblies are put into the BIN and GAC.
If above cannot work, you can check the troubleshooting steps in the link below:
http://www.bluedoglimited.com/SharePointThoughts/Lists/Posts/Post.aspx?ID=189
Best regards.
Thanks
Victoria Xia
TechNet Community Support

This page cannot be displayed - web connectivity problem

Just purchased an HP laptop with Windows 8 and IE 10.
I am connecting to my wireless connection because I can login and use Yahoo messenger, but cannot access any websites. When open IE, get the error: This page cannot be displayed.
There is an option to Fix Connection Issues - tried this and get the following results:
Problem with wireless adaptor or access point (not fixed)
Your computer appears to be correctly configured, but the device or resource (www.msn.com) is not responding.
Searched Google and there was a suggestion to flush the dns using command: ipconfig \flushdns. Did this, rebooted and then the home website does come up (www.msn.com). However, if I click any link on the site, I then get back to the same 'This page cannot be displayed' message.
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I'm sorry your new laptop isn't working! I think I have some solutions for you and hopefully resolve your issue quickly.
(Make sure your time and date are correct!)
First, reset your router. This is done by unplugging the power from your router and modem. Once ALL the lights on both are out, wait a few seconds. Plug the modem back in, wait for the lights to come on, then the router. Give it time to access the device and assign IP addresses (this takes up to 4 minutes with some models). Once completed, try to reconnect using your HP laptop.
If that does not work, manually reset your IP address by using the command prompt (search for it using the search option on the right menu),
ipconfig /release
ipconfig /renew
This should flush the IP address. You have already reset the DNS, and you may do so again just to clear everything.
If that still does not work, hook the Ethernet cable directly into your laptop and see if it can get online. If it does, then it is a wireless connection issue and you should either return it OR have Geek Squad take a look. If it doesn't work, then either your router will NOT assign an IP address properly due to the computer having the same IP or Name as another computer on your network, or the computer could have a winsoc issue. In this case, you would have to restore the computer or
go to :
microsoft.com/fixit
And use there fix. Download it on another computer, burn to DVD/CD or drop it to a flash drive, then use it on the computer giving you the issue.
Let me know if any of these options work!
- Disclaimer: While Agent Bender is currently employed at GeekSquad, ALL posts made by Agent Bender are her personal opinions, and do not reflect the opinions or policies of Best Buy or GeekSquad. -

"This page cannot be displayed error"

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LYNC 2013 control panel error: this page cannot be displayed

Dear sir,
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Hi TECH-Tommy,
The certificate is under “Personal” store.
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import java.io.*;
import com.cognos.developer.schemas.bibus._3.*;
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* To change this generated comment edit the template variable "typecomment":
* Window>Preferences>Java>Templates.
* To enable and disable the creation of type comments go to
* Window>Preferences>Java>Code Generation.
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Edited by: Invinc4u on Dec 15, 2008 6:56 AM

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hope this helps,
raj

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Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported.

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