typo3 extension activation is not possible - typo3

Hi I try to install a new TYPO3 8.7 version on a new server.
When I installed TYPO3 all looks good. But I can't aktivate Extensions. It dosn't mather if it is my own extension or a third party extension or a core extension.
I don't got an error. the extension is activated in extension manager. But the extension is not listed and can't be used.
What is the issue in this case?
Thanks in advance.
They are not shown there, but its activated in extension manager.

solved.
update extensions in view "get extensions" does the trick

Related

Updated Typo3 news extension, now "News Administration" displays an error ...LinkButton" is not valid

I have recently updated the news extension for my Typo3 installation. Now, if I click on the button "News Administration" on the left panel and then on the folder with my news, I get an error:
Button "TYPO3\CMS\Backend\Template\Components\Buttons\LinkButton" is not valid
The provided link shows it's the TYPO3 exception 1441706370.
I am running an old Typo3 version (7.6.19.) which I wanted to update. But I thought it'd be wise to first update all extensions before updating Typo3 (and PHP and MySQL..).
PHP 7.4.33
MySQL 5.7.38
What is now the smartest way to go on? I want to ensure that my system will run later with the newest versions without any data loss on the way.
I checked the documentation and the changelog of the news extension. But I did not find a hint on what to do yet.
if you planned to upgrade to the latest version greater than 7.x then you better ignore this. just focus on upgrade wizards that you don't miss any upgrade wizard provided by some extensions to upgrade from one version of TYPO3 to another version.

Extension Manager is in offline mode. No TER connection available in TYPO3

I have installed TYPO3 Version 7.6.15 by using composer and also I am using the Xampp version 7.0.0. I have installed many extensions and activated them successfully at the backend of my TYPO3 page.
Now, I have installed the Ecodev/typo3-cms-speciality-distribution via composer. and i am trying to activate it from extension manager but it is giving me following error. Error
Now, I have no idea, what to do? at this link https://github.com/Ecodev/typo3-cms-speciality-distribution
it is written to deactivate EXT:fluid_styled_content, EXT:context_help, EXT:func, so i did, but still the same error. Any help will be grateful thanks.
Finally, i found the error, it is just because when we installed the speciality distribution package, we also need to install and activate all the other dependencies which are important for this package.
After installing them, this problem will resolved. As, i was using it via composer mode.
Thanks

How to downgrade typo3 7.4.0 to 6.2.15

What are the steps to downgrade a typo3 site and is this even possible?
I cannot get a few plugins to work on my 7.4 typo site so I decided to downgrade but I cannot find anything about it on typo forums or in the documentation. Are there any steps I can follow if this is possible.
Before upgrading your website you should always backup your data and avoid downgrading at any time.
Compatibility mode for TYPO3 6.x
The system extension compatibility6 is shipped with TYPO3 7, have you tried installing this extension already?
See also: Retaining compatibility to TYPO3 CMS 6
Downgrading from 7.x back to 6.2
There is no such thing as a documentation with downgrade instructions. But if you have no other option than you can try the following:
Before running TYPO3 again:
Backup your data
Remove the TYPO3 7 core as well the composer.json (and /vendor/ directory), .htaccess and index.php file from your website.
Remove the content of /typo3temp/, /fileadmin/_processed/ and /fileadmin/_temp_/.
uninstall all TYPO3 7 related (system) extensions by setting the state to inactive in the /typo3conf/PackagesStates.php file.
Uninstall or downgrade all extensions which are only compatible with TYPO3 7.x.
Set manual the ['SYS']['compat_version'] in /typo3conf/LocalConfiguration.php to '6.0' (we let TYPO3 think that we are uograding from 6.0. Please note that TYPO3 7 doesn't have this option anymore and you need to create it yourself.
Remove all array items from the array ['INSTALL']['wizardDone'] in /typo3conf/PackagesStates.php.
Set manual options such as ['FE']['activateContentAdapter'] back if needed.
Put the TYPO3 6.2 core back in it's place.
Now you're allowed to run TYPO3 again:
Log in on the install tool by accessing /typo3/install/.
Run the database compare but please don't remove fields or tables that belongs to extensions which you have temporary disabled for downgrading purposes.
Clear all caches from the install tool.
Run al steps from the upgrade wizard.
Reactivate disabled extensions (manually).
Check if the ['SYS']['compat_version'] is set to '6.2'.
Test your TYPO3 instance as good as you can.
Arek van Schaijk solution worked to downgrade 8.7 to 7.6. But a couple of additional changes might require.
in the file
typo3/sysext/core/Configuration/DefaultConfiguration.php
change fileCreateMask from 0664 to 0660
change folderCreateMask from 2775 to 2770
Symbolic links can be rectified with this solution.

typo3 4.5 convert .zip to .t3x extension

I am a new player in Typo3 and I have an issue with backward compatibility.
I was developing my personal extension using typo3 version 6.1 platform, and pack it into .zip file. This is possible since Typo3 version 6.1 can accept both .zip and .t3x files when it comes to uploading extensions using Extension Manager. There are no methods to download my extension into .t3x format.
The thing is, now I am working on different site using Typo3 version 4.5, and I would love to use my extension again. Since there are no method whatsoever in Extension Manager to upload .zip extensions, the only option for me is then to convert .zip to .t3x format.
Is there any possible ways for me to do this? Or am I missing some documentations about different work around?
Two things:
you don't need to compress your ext into any archive/ext file, just copy whole folder with your extension from typo3conf/ext/ to identical location in other TYPO3 page and it will behave like it was imported via Extension Manager (don't forget to install it a the end)
I really doubt if your ext written for TYPO3 ver. 6.x will work in
4.x at all...

TYPO3 tt_news update script shows empty page

After updating my TYPO3 CMS from 4.3 to 4.5 LTS the news were no longer displayed. So i decided to update tt_news extension as well. It was at version 2.5.2 and had to be upgraded to the newest 3.4.0. It suggested to me, to use its own 'update script' (and as mentioned at other resources too) to work properly because of serious changes. Under 'Extentension Manager' - 'tt_news' - 'UPDATE!' it shows up with a simple blank page and nothing can be done.
Is there any hint to solve this?
You have got some PHP error. Copy the /var/log/apache2/error.log or enable in TYPO3 Install Tool configuration PHP errors.