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Perché non riesco ad aggiungere o installare plugin in WordPress? (5 motivi)

Una delle domande più frequenti che i nostri lettori ci pongono è: “Perché non posso aggiungere plugin in WordPress?”.

Questa situazione si verifica di solito quando l’utente vede un messaggio di aggiornamento o l’area di amministrazione non ha il menu dei plugin. Se avete a che fare con questo problema, siete nel posto giusto: in questo articolo vi illustreremo le ragioni più comuni.

Continuate a leggere per scoprire perché non è possibile aggiungere o installare plugin in WordPress.

Why Can't I Add or Install Plugins in WordPress

In questa guida sono elencati 5 dei principali motivi per cui non è possibile aggiungere o installare plugin in WordPress. Sentitevi liberi di usare i collegamenti rapidi qui sotto per passare all’argomento specifico che si applica alla vostra situazione:

1. Siete su WordPress.com

WordPress.com è un servizio di hosting per blog che offre una versione limitata del popolare software WordPress self-hosted. Per maggiori dettagli, consultate la nostra guida sulla differenza tra WordPress.com e WordPress.org.

Gli utenti di WordPress.com non possono installare plugin a meno che non passino al piano Business o superiore, che parte da 10 dollari al mese. Se siete su un piano gratuito, personale o premium, non potete installare plugin di terze parti.

Trying to install a plugin in WordPress.com

Se non volete pagare questa cifra, potete spostare il vostro blog da WordPress.com a WordPress.org.

Se avete bisogno di aiuto per farlo, potete utilizzare il nostro servizio gratuito di configurazione del blog WordPress. Basta indicare che volete che trasferiamo il vostro sito e lo faremo gratuitamente.

Suggerimento professionale: Volete creare un sito web su WordPress.org senza problemi? I nostri servizi WPBeginner Pro possono aiutarvi a dare il via alla vostra presenza online e a costruire un bel sito senza alcuno sforzo.

2. Esistono limitazioni di ruolo per gli utenti

WordPress ha un sistema integrato di gestione dei ruoli degli utenti che assegna diversi livelli di accesso agli utenti del sito web.

Gliamministratori sono il ruolo più alto dell’utente e hanno pieno accesso a tutte le funzionalità del sito WordPress, compresa l’aggiunta, l’installazione e l’attivazione di plugin.

D’altra parte, gli Editori, gli Autori, i Collaboratori e gli Abbonati non possono installare plugin.

Administrator vs Editor dashboard in WordPress

Se state elaborando in corso un sito web ma non vedete il menu “Plugin”, è possibile che non abbiate l’accesso come amministratore.

In questo caso, se vi fidate della persona che gestisce il sito web (ad esempio, uno sviluppatore o un webmaster), potete chiedere gentilmente di concedervi le autorizzazioni di amministratore per installare i plugin di cui avete bisogno.

3. Problema di limite di memoria

Il secondo scenario più comune è quello in cui è possibile vedere e accedere alla pagina dei plugin, ma non è possibile installarli. Quando si tenta di installare i plugin, viene visualizzato un messaggio di errore.

Questo errore è solitamente causato dal limite di memoria di PHP. WordPress è scritto utilizzando il linguaggio di scripting PHP e ogni script PHP utilizza una certa quantità di memoria.

Ci sono impostazioni nel vostro hosting WordPress e nel nucleo di WordPress che definiscono la quantità di memoria che uno script PHP può utilizzare.

Quando un processo raggiunge questo limite, viene terminato o mostra un errore come questo sul vostro sito WordPress:

Errore irreversibile: La dimensione di memoria consentita di 67108864 byte è esaurita.

La soluzione rapida a questo problema è aumentare il limite di memoria di PHP. È possibile farlo aggiungendo questa riga al file wp-config.php:

define('WP_MEMORY_LIMIT', '256M');

Per istruzioni più dettagliate, consultate la nostra guida su come risolvere l’errore di esaurimento della memoria di WordPress.

Si noti che, sebbene l’aumento del limite di memoria di PHP possa talvolta correggere il problema e consentire l’installazione dei plugin, è importante capire che non è sempre la soluzione ideale.

Il codice dannoso potrebbe sfruttare un limite di memoria elevato per consumare più risorse del previsto, con un potenziale impatto sulla sicurezza del sito WordPress.

Prima di modificare il limite di memoria, si consiglia di consultare il proprio fornitore di hosting WordPress. Questi può analizzare le esigenze specifiche del vostro sito web e consigliarvi un aumento sicuro e appropriato del limite di memoria, se necessario.

Per saperne di più, potete leggere il nostro articolo su come richiedere correttamente l’assistenza di WordPress.

4. Siete su una rete multisito

Un’altra possibile ragione per cui non si riesce a vedere il menu dei plugin in WordPress è se il sito fa parte di un network o di una rete di WordPress multisito.

Un network multisito di WordPress consente di gestire più siti web da un’unica installazione di WordPress. Può essere utile in situazioni in cui è necessario gestire un network o una rete di siti web simili.

Tuttavia, una differenza fondamentale tra un network o una rete di multisiti e una tipica installazione di WordPress è che l’amministratore della rete ha un maggiore controllo sui singoli siti.

In alcuni casi, l’amministratore della rete potrebbe disabilitare il menu dei plugin per singoli siti all’interno della rete per mantenere la coerenza o garantire la stabilità di tutti i siti.

Installing plugins on multisite network

Per risolvere questo problema, potete chiedere al vostro amministratore di rete di installare i plugin per voi.

Per saperne di più su questo argomento, consultate la nostra guida sul perché non si vedono tutti i plugin nelle installazioni multisito di WordPress.

5. Avete caricato il file del plugin sbagliato

Supponiamo di voler caricare un file di plugin di terze parti, ma WordPress continua a mostrare un messaggio di errore come quello riportato di seguito:

Example of plugin upload error

In questo caso, si potrebbe verificare se si sta caricando il file giusto. I file dei plugin sono solitamente contenuti in un pacchetto .zip, il che significa che utilizzano il formato .zip.

Si consiglia inoltre di controllare se i file di contenuto zip scaricati sono compatibili. Non tutti i plugin di terze parti provengono da fonti affidabili e questo potrebbe essere il motivo per cui non vengono caricati correttamente.

Per ulteriori informazioni sull’installazione dei plugin, consultate le nostre guide qui sotto:

Inoltre, per ridurre al minimo i rischi per la sicurezza, consigliamo di installare solo plugin provenienti da fonti affidabili, come la directory dei plugin di WordPress.org. La directory di WordPress.org ha un processo di revisione e tende a offrire plugin di sviluppatori affidabili.

Ecco alcuni suggerimenti aggiuntivi per la scelta di plugin sicuri:

  • Cercate plugin con uno sviluppo attivo e buone valutazioni da parte degli utenti.
  • Selezionate la data di aggiornamento per assicurarvi che il plugin sia compatibile con la vostra versione di WordPress.
  • Leggete la descrizione e le recensioni del plugin per capire le sue caratteristiche e i potenziali problemi di compatibilità.

Imparare a correggere gli errori più comuni di WordPress

Oltre all’impossibilità di installare i plugin in WordPress, di tanto in tanto ci si può imbattere in altri tipi di problemi. Verificate gli articoli seguenti per risolvere alcuni di questi problemi comuni:

Speriamo che questo articolo vi abbia aiutato a capire perché non è possibile aggiungere o installare plugin in WordPress. Potreste anche consultare la nostra guida per principianti alla risoluzione degli errori di WordPress e il nostro articolo su come risolvere i più comuni problemi di immagine in WordPress.

Se questo articolo vi è piaciuto, iscrivetevi al nostro canale YouTube per le esercitazioni video su WordPress. Potete trovarci anche su Twitter e Facebook.

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Editorial Staff at WPBeginner is a team of WordPress experts led by Syed Balkhi with over 16 years of experience in WordPress, Web Hosting, eCommerce, SEO, and Marketing. Started in 2009, WPBeginner is now the largest free WordPress resource site in the industry and is often referred to as the Wikipedia for WordPress.

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Reader Interactions

108 commentiLascia una risposta

  1. Petya Ivanova

    Thank you so much!!

    • WPBeginner Support

      You’re welcome :)

      Admin

  2. hossein

    Hello
    I can see the plugin menu and the plugin I have installed
    But the add new plugin button is disabled
    can you help me?

    • WPBeginner Support

      There is a good chance your site is a part of a multisite network. If it is not then we would recommend checking that you do not have any plugins that would prevent adding new plugins.

      Admin

  3. samaneh

    I can see plugin widget in my dashboard but when I clink on add plugin, there are no plugins. I just see an error:
    “An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the support forums.”
    If I search a plugin name in search bar, the page refreshes but finally this massage appears again.
    what did happened?

    • WPBeginner Support

      For that error, we would recommend checking with your hosting provider to see if they have the specific error logged or if they may have a setting in their system that may have blocked the connection to WordPress.org.

      Admin

  4. DaninMCI

    How ridiculous. I have several websites and I was going to create a new WordPress-based site that needed to use a comparison chart but I’m not willing to pay $300 a year for plugins. I’ll go elsewhere I guess.

    • WPBeginner Support

      As we say in that section, if you do not want to pay $300 per year, we would recommend using WordPress.org which is a WordPress site on another hosting provider :)

      Admin

  5. Richard Ross

    I have inserted the plugin name but it still prompts me the same error.

    Error: The plugin has no name. Add a Plugin Name: line to your main plugin file and upload the plugin again. For more information, please review our documentation on Plugin Headers.

    • WPBeginner Support

      If the plugin is one you’re downloading from an external site you would want to reach out to the plugin’s support with that error message. If it is a custom plugin then you would want to ensure your plugin name is set as a comment in the header.

      Admin

  6. Pascal Idhiarhi

    Hi, I tried to add new plugin, and theme. But I am currently getting 403 Forbidden error. What can I do?

  7. Deborah

    I have a multisite and I installed several plugins but one isn’t showing. I can see it when I go to plugins and I have activated it but it is not showing up in my dashboard so I cant use it. Help. Why isn’t a particular installed and activated plugin showing up in m dashboard but other plugins are?

    • WPBeginner Support

      Not all plugins work with multisite installations, we would recommend checking with the support for that plugin and they would be able to help with any issues like this.

      Admin

  8. Akshay

    Hi,
    Thank you for sharing knowledge. We have a wordpress website hosted on our company internal server. Now we would like to migrate it to our cloud platform.
    I tried to click Add new plugin to install “All-in-One WP Migration”. However whenever I click on ‘Add new’ link server is returning 503 error. Rest all links on admin page works fine.
    Any suggestions?

  9. Monisha

    Thanks this helped! : )

    • WPBeginner Support

      Glad our guide helped :)

      Admin

  10. Arif Ammar

    Thanks WP team. My problem is solved.
    Thanks again for you precious support.

    • WPBeginner Support

      Glad our guide was helpful :)

      Admin

  11. Evan Cleary

    I set up a Wordpress site in 2014 and was able to get plugins without going into a business plan. And I sent up another site a few years ago and it was also not any problem to add plugins. As far as I know, it was via Wordpress.com and not Wordpress.org – I downloaded a theme and editors that and used my own URL hosted by a hosting company. I’m quite confused now as no one seems to be saying that this policy of having to pay for a business plan is a new thing. Is it a new thing?

    • WPBeginner Support

      If your site is on a hosting provider and not the WordPress.com website then it is a WordPress.org site. Having to purchase the business plan on WordPress.com for access to plugins is not something new.

      Admin

  12. karan

    I had one site of mine that had the issue of no option for adding or updating plugins. For some reason define(‘DISALLOW_FILE_MODS’,true); was in my wp-config file.

    Once I deleted that line, my plugin options were restored. It took me a while to find this solution. I hope this helps people find this solution.

    • WPBeginner Support

      Thanks for sharing your recommendation :)

      Admin

    • Sophorn Chhum

      Thanks, man. You’re awesome :D

    • naema

      Excellent.Great it’s working.Thank you!!!

  13. Heide

    Thanks for the good article! I am bit confused, because I am super administrator and can’t install any new plugins. I can activate and deactivate plugins for sites or the whole network. But I don’t have the page for plugin installtion. Do you have any suggestions in this case? Thanks!

    • WPBeginner Support

      If you’re using a multisite like it sounds like you are, you would need to install the plugin in the network admin area rather than on the individual sites.

      Admin

  14. anis

    when i try to install a pluging it shows the following:
    Installation failed: Abort class-pclzip.php : Missing zlib extensions
    what should i do

    • WPBeginner Support

      For that error, you would want to first reach out to your hosting provider and they should be able to assist.

      Admin

  15. Amy Skea

    I can’t download I get this message. I have tried various plugins and get the same.
    Thank you

    Installation failed: Could not copy file. wp-fastest-cache/wpFastestCache.php

  16. santosh

    hey i cant upload and install pluginsin my wordpress website.
    its shows just the blank page.please help me

  17. Amarnath

    Hey, I am troubling to install wordpress.
    “The MySQL Connection could not be established.”
    It is written like this what should I do?

    • WPBeginner Support

      You would want to ensure your username and password in your wp-config file are the correct ones, you may also want to check with your hosting provider’s support if this is a new error and they should be able to assist.

      Admin

  18. May

    Hey.
    How Can I transfer my blog from wordpress.com to wordpress.org to get the benefits of the second one ?

  19. Zeeshan

    hi!
    i am install pulgin but faild.
    and ERROR IS

    Fatal error: Maximum execution time of 30 seconds exceeded in G:\xampp\htdocs\Ecommrace\wp-includes\Requests\Transport\cURL.php on line 462

  20. Ale Sants

    Hello! Same problem here. Cannot ADD plugins.

    More details of my site:

    WordPress 5.2.2 running Bridge theme, so Wordpress.org. no .com

    Hostgator for hosting

    I am an admin and no one else has ever done any work on the site, so I am the only admin for sure.

    Please help and thanks in advance!

  21. Rishabh Jain

    Hey!
    I want to install WP super cache plugin but when I search it in plugin dialog box, on right top corner it shows ‘Not Available’ Why is it so? Is there any problem with my blog. Please help me out…

    • WPBeginner Support

      Is your site on WordPress.com or a managed hosting provider?

      Admin

  22. Mazie

    Don’t know what I’m doing wrong with new wordpress.com blog (true newbie). My menu doesn’t look like those above. All I see are the following 7 options, all are listed on the left: Site Identity, Colors & Backgrounds, Fonts, Header Image, Menus, CSS and Widgets. I guess my question is, is this as it should be for the free (.com) site? Is it from this menu that I will create and complete my free blog?

    Sorry to be so ignorant about this. I think I’m missing something as I don’t imagine it’s supposed to seem so confusing.

    Thank you!

    Mazie

    • WPBeginner Support

      Sadly, our tutorials are for WordPress.org rather than WordPress.com which is what you’re using would be part of the confusion. If you go to the wp-admin area of your WordPress.com site the admin area will look similar but you will still have the WordPress.com limitations.

      Admin

  23. Sasha

    Deactivate Wordpress Plugin: WP Editor and you will be able to see list of your hidden plugin. WP Editor not tested/comparable with new WP version and php 7.

    • WPBeginner Support

      Thanks for sharing what worked for you :)

      Admin

  24. chris

    I am trying to install a plug-in on a website that a company designed for me but I don’t have the plugin option in my administrator menu (made sure I was an admin not just a editor). My admin bar is also Red with “PRODUCTION SERVER” next to my name. Are these too related? How to I add plug-ins if I don’t have the the plug-in tab?

  25. Nalin Puri

    I am using InstantWP Named automated wordpress local server.If i buy my hosting service can i shift my blog from instant vp to that hosting server of GoDaddy

  26. sajilesh kurup

    Hi,

    on wordpress website i am able to see pulgin menu, however as i hover mouse pointer over it not displaying option menu of add new

  27. anh tuan

    please help me! i’m a admin on my website but i can’t see any plugins on plugin dashboard, in my hostin, it still no problem??

    • WPBeginner Support

      Hello,

      You may not have an admin account or someone you hired to work on your website has disabled your access to plugins area. Sometimes developers do this to make sure that their customers don’t accidentally break their websites.

      Admin

      • kevin shiu

        How do I go about fixing this myself assuming the original developer is no longer around?

  28. Judy Adams

    I tried adding the plug in contact form 7 add-on now I get a white a screen after activating or trying to activate. I cannot go to my dashboard or anything in word press now. When trying to FTP in to deactivate plugin I am not sure what login and password to use. Can you please help me? I don’t want to lose my whole website I created because I cant get in now.

  29. Riazvic

    Hi,
    I am having an e-commerce website, unfortunately, I am having a theme which came with a premium plugin which I have purchased. their plugin section is available but widget section is not available how can I put google translate code into that theme where should use that code in the theme files?
    I hope to get an answer here.
    thanks in advance for your support.
    Kamal

  30. David

    Hello.I have the same issue of can not add new plugin in wordpress plugin panel.

    1. No “add new” plugin options
    2.No “trash” plugin options
    3.Other issue is I can not find the “editor” in appearance panel

    Would you like to let me know how can i fix this?

    • Rizqi

      I have same issues, it also can’t update existing plugins, because the link is gone. Have got the solutions?

  31. Jacqueline

    Hi. I purchased the Divi theme and plug in file. The theme uploaded fine but when I go to upload the plug in file it fails. Anything I can do? Thank you for your support on this matter.

  32. Aziz Nazarov

    Hello,

    Thank you for sharing such a valuable info.
    Maybe this’s a bit off topic question.
    I’m having a small issue at the moment with adding a new submenu page.
    So basically I got an Astra Theme (not a pro version) with Beaver Builder.
    I add the page as usual then add to the menu under sub-item, all looks good.
    But when I click on the sub menu page it doesn’t take me there. It basically takes me to a home page.
    What could be an issue? Could you help me please?
    Thank you

  33. Sir Joe

    Thanks a lot! Your article helped me

  34. candy

    I cannot activated and install my plugin.

    Parse error: syntax error, unexpected T_FUNCTION, expecting ‘)’ in E:\AppServ\www\shopify\wp-content\plugins\ninja-fb-private-reply\src\Facebook\autoload.php on line 45

    please help me fix this .

  35. Mark

    Hi, I cant log on to my wordpress account. It says “ERROR: There is no user registered with that email address.” I know for a fact that that is the correct email address associated with the account.. Please help!!! I dont have any of the other information required to reset the account (such as transaction ID) HELP!!!!

  36. mark

    should I switch to wix or weebly? this is stupid. I have to sit here for hours googling to not be able to do the stupidest simplest things. I don’t want to learn wordpress I just want a simple ecommerce site that wont be like a college course to get set up.

    M

  37. lokesh

    I’m getting this message while installing the plugins.

    An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the support forums.

    How to solve please help

  38. Yeboah Martin

    I had this message when trying to upload a plugin:

    POST Content-Length of 11688443 bytes exceeds the limit of 8388608 bytes in Unknown on line 0

      • Tabish

        Hi! Wanted to ask you guyz two things: You guyz run this website on WordPress, right? Which theme do you use? And like YEBOAH MARTIN said, I was facing the same error when I tried to create a video streaming site and uploaded videos. I did increase the file size limit to 977 GB! And I am sure that it isn’t the storage, as my hosting provider has made unlimited disk storage available! (Cuz I created that hosting service!)

  39. Jitendra Mahato

    Hi,
    I have migrated my blog yesterday. All the things are good but the error in the plugin. I have deleted all the plugins. After then, while i am starting to install the plugin, then No, any plugin is adding..
    While adding….
    Messages lke this…
    Could not create directory. /home/danfeh5/public_html/example.com/wp-content/plugins/boombox-theme-extensions

  40. Angelo

    Hi.Why is it my comment section is closed?Even if i downloaded comment plugin it seems nothing changed

    • WPBeginner Support

      Hi Angelo,

      If comments are closed on all your articles, then go to Settings » Discussion page inside WordPress admin area and check the box next to ‘Allow people to post comments on new articles’ option. Any new article you now add will have comments enabled by default.

      For your older article you will have to edit them and then on the post edit screen click on the Screen Options button at the top right corner of the screen. Check the box next to Discussion option. Now scroll down below the post editing area and you will see a Discussion meta box where you need to check the option ‘Allow Comment’ option.

      Admin

  41. Lisa

    Hi I got this when trying to install jetpack and its not on my list of plugins and I am not sure what to do Installing Plugin from uploaded file: jetpack.4.9.zip
    Unpacking the package…

    Installing the plugin…

    Destination folder already exists. /home/content/p3pnexwpnas02_data01/46/2075146/html/wp-content/plugins/jetpack/

    Plugin install failed.

    Return to Plugin Installer

    • WPBeginner Support

      Hey Lisa,

      Your website already has a folder called jetpack. You need to connect to your website using an FTP client or File manager in Cpanel and delete that folder to install the plugin from the zip file.

      Admin

  42. Omar

    Hi, I can see and add plugins in “my” installation (its not a multisite) of wordpress but suddenly there’s no option for activate/delete under the plugin name, but I still can do this trough the bulk actions option… did someone know why this happens?

  43. Omprakash

    Hi Why none of WP Plugins are installing in my WP Dashboard please Help me

  44. Rafael

    I was added as ‘admin’ in a multisite WordPress so I couldn’t see the Plugins. Asked for the ‘network admin’ to enable Plugins in ‘Network Configurations’ but looks like that just allows me to see the Plugins, still not able to install new plugins.

    • WPBeginner Support

      Hey Rafael,

      The network admin or super admin can allow individual site admins to activate or deactivate plugins on their own.

      Admin

      • Rafael

        Thank you for the reply, I got it now. It just wasn’t clear, I see now that only the network admin can install new plugins.

  45. zork

    awesome man: define(‘WP_MEMORY_LIMIT’, ’64M’);

    this solved my problem after a migration from local to production

    thank you so much!

  46. Ankur Sharma

    i have installed wordpress on pc with xampp. when i install ULTIMATE MEMBER plugin it shows an error and when i upload the plugin it shows the memory limit problem..
    i have already added that line you mentioned i.e.
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    and also i have changed a line in php.ini file in xampp

    ; Maximum allowed size for uploaded files.
    upload_max_filesize=3000M

    nothing is working .. please help me ..
    Thanks!!

  47. tom bukkots

    Can’t add or delete plugins in WordPress

  48. Nicole

    I have wordpress.com/wp-admin.. I have admin rights and i still have no options for adding new plugins. Any suggestions?

  49. Ali Shair

    if i Host my wordpress.com site on Hostgator or go daddy then it is possible to upload themes or plugins

    • WPBeginner Support

      Hi Ali,

      No you cannot host your WordPress.com site anywhere else. You will need to use self hosted WordPress.org.

      Admin

  50. Betina

    Hi,
    If I buy a domain from wordpress.COM will it let me download and install plugins like adsense?

    Thanks!

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