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Anybody can help me with this error, I tried everything but no way, The link for the screenshot and the ActivityLog.xml

Link : https://drive.google.com/open?id=1ebPES ... jYqH0mWojp

Please reinstall Entity Developer with checking environment:
1) uninstall Entity Developer and other Devart ADO.NET products
2) make sure (via some file manager like https://x-diesel.com/) that there are no Devart.* and policy.*.Devart.* files/folders in the following locations:
* GAC 2.0 (\Windows\assembly\GAC_MSIL\)
* GAC 4.0 (\Windows\Microsoft.NET\assembly\GAC_MSIL\)
3) clear the directories:
* \Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\Extensions\Devart\
* \Program Files (x86)\Devart\
* \Program Files (x86)\Common Files\Devart\
* \Documents and Settings\All Users\Devart\EntityDeveloper\
* \Documents and Settings\All Users\Devart\dotConnect\
4) run installation of Entity Developer v6.5.823 via its right click > Run as administrator menu

Did it help? If not, run devenv.exe /ResetSkipPkgs, then devenv.exe /setup. This should fix the issue.

I Follow all steps but didn' work and i executed the commnds line but the same error

Try this way:

1) uninstall Entity Developer

2) clear the folder "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\Extensions\Devart\"

3) open "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\Extensions\extensions.configurationchanged" with a text editor, add some text (e.g.: "1"), save it, open again and remove the added text to restore its original state. Save the file again. These actions will make VS2019 to recreate the cache

4) run installation of Entity Developer v6.5.823 via its right-click > Run as administrator menu

Does this help?

I Applied what did you mentioned but still the same error, maybe the community edition has a problem compatibility? I re-installed the VS2019 but not working

Please close your VS2019 and rename your C:\Users\BAZIZ\AppData\Local\Microsoft\VisualStudio\16.0_8ce728d5\privateregistry.bin.

VS2019 should recreate this file on the next run. You can restore your previous settings by restoring your previous privateregistry.bin.

Does the new privateregistry.bin fix the issue?

Hi, The same error take a look in the screenshot
Link : https://drive.google.com/open?id=1bFGJJ ... Fgn--bNEO2

Looking at your original and current error messages, there are different user names (BAZIZ and RYAD) and different VS2019 instances (16.0_8ce728d5 and 16.0_fde6ba37).

If you performed the suggested steps to fix the issue with a different VS2019, do the same steps with VS2019 you are actually using.

No sir, I took a screenshots from 2 differents PCs. sorry i'm not declare that before. i have 2 PCs wich VS2019 Community v16.2.5 is installed into them but entity developer don't integrate in my 2 VSs. if you want i can give you a remote access via teamviwer. i want to fix that. Thanks

We cannot reproduce the issue in our test environment using the newest versions Entity Developer v6.5.823 and VS2019 Community v16.3.2.

Upgrade your VS2019. If this doesn't help, open VS2019, navigate to Help > About, press Copy Info and give us this information here or via contact form.