I have noticed that when installing a new D8 site, Seven is the default admin theme.

The "Install New Module" button is not available right away.

  1. Enable Update Manager >> Core
  2. Go to "admin/appearance" to select Seven as admin theme.
  3. Clear cache, and revisit the page.

The Install button now appears. Hope this helps someone!

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Comments

joedevdrupal created an issue. See original summary.

cilefen’s picture

cilefen CreditAttribution: cilefen commented
Status: Active » Postponed (maintainer needs more info)

Can you explain in a few more words where the bug occurs in the steps to reproduce?

genfoch01’s picture

genfoch01 CreditAttribution: genfoch01 commented

I had the same issue.
i did a fresh install of drupal 8.8.2 which has seven as the default admin theme.
going to /admin/appearance

the + install new theme button was missing.

I switched the theme to Bartik as a test and could see the button as expected. switched back to seven and again was not able to see the button.

after i cleared the cache, the button showed up as expected.

cbf28’s picture

cbf28 CreditAttribution: cbf28 as a volunteer commented

Neither of these solutions worked for me. I installed Drupal 8 on Godaddy.

greg.1.anderson’s picture

greg.1.anderson CreditAttribution: greg.1.anderson at Pantheon commented

I have been in a situation where "drush cr" did not make the button appear. I un-installed the update manager and re-installed it. At that point, the "install themes" button (under Appearance) was present, but "install modules" was not. Rebuilding the cache at this point made the "install modules" button appear.

noogoom’s picture

noogoom CreditAttribution: noogoom commented

had the same issue and I found an answer on stackexchange where a user implied that the feature had been moved from Appearance to Reports > Available Updates > + Install new module or theme. For my part, I had to additionally install the Update Manager under Extensions > Core > Update Manager.

Maybe this works for you.

Version: 8.6.9 » 8.6.x-dev

Core issues are now filed against the dev versions where changes will be made. Document the specific release you are using in your issue comment. More information about choosing a version.

Version: 8.6.x-dev » 8.9.x-dev

Drupal 8.8.7 was released on June 3, 2020 and is the final full bugfix release for the Drupal 8.8.x series. Branches prior to 8.8.x are not supported, and Drupal 8.8.x will not receive any further development aside from security fixes. Sites should prepare to update to Drupal 8.9.0 or Drupal 9.0.0 for ongoing support.

Bug reports should be targeted against the 8.9.x-dev branch from now on, and new development or disruptive changes should be targeted against the 9.1.x-dev branch. For more information see the Drupal 8 and 9 minor version schedule and the Allowed changes during the Drupal 8 and 9 release cycles.

oliversiegel’s picture

oliversiegel CreditAttribution: oliversiegel commented

My god, how do I upvote this issue??

I just spent 2 hours after installing drupal 9 trying to figure out how to install a module from URL via the UI.

Even went so far as to install drupal 8 to see if it's an issue with version 9...

Re-affirming themes and changing cache did the trick...

cilefen’s picture

cilefen CreditAttribution: cilefen commented
Priority: Normal » Major
Status: Postponed (maintainer needs more info) » Active

This is the way.

cilefen’s picture

cilefen CreditAttribution: cilefen commented
Title: New Drupal 8 Install - Seven Theme - Missing Install Module » Missing install module in new installs in Seven theme
Version: 8.9.x-dev » 9.0.x-dev
pameeela’s picture

pameeela CreditAttribution: pameeela commented
Status: Active » Closed (duplicate)
Issue tags: +Bug Smash Initiative

I feel pretty sure this is a duplicate of #2350711: Update module fails on installation and there are patches there, so I'll close this in order to direct all of the effort over there.