No “Solutions” Gallery or other “Web Designer Galleries” under Sharepoint Online “Site Settings”

No “Solutions” Gallery or other “Web Designer Galleries” under Sharepoint Online “Site Settings”

Assume following situation:

• you buy an Enterprise or Business Office 365 Plan;
• you want to use some custom Sharepoint Site Template (your own or 3-rd party);
• you have a Web Solution Package file (.wsp) you want to use;
• you try to use Microsoft Office support manual to Upload the site template to a Solutions Gallery;
• you discover that you cannot find Solutions under Web Designer Galleries or you may have noWeb Designer Galleries under your Site Collection Site Settings at all.

Default Sharepoint Online Site Collection Site Settings located here:

https://.sharepoint.com/settings.aspx
where is your .onmicrosoft.com Office 365 tenant name

You may have something like

Some smart guys may also find Solutions Gallery and even button Upload Solution under URL:
https://.sharepoint.com/_catalogs/solutions/Forms/AllItems.aspx

 You may even try to Upload Solution Web Solution Package file (.wsp) there but you get permission error (I’ve already sent request)

Resolution.

Microsoft Sharepoint Online team rolled out a feature to limit the amount of scripting allowed in order to maintain the security and integrity of the sites in tenants. SharePoint Online tenants received the feature. When the scripting is disabled, the theme gallery, certain web parts, and other features that support scripting are no longer available to site collection owners or site owners. For more information, go to Turn scripting capabilities on and off.

The symptom that no Web Designer Galleries options is probably caused by this update. Please follow the steps below to validate this.

• Sign in to Office 365 with your work or school account.
• Go to the SharePoint admin center.
• Select Settings.
• Under Custom Script, check if custom script is disabled.

If you cannot see the Custom Script option or the settings are already Allow, please let Microsoft Support know. It may reflect a different issue. 

If the settings are Prevent, you may switch the option to Allow so as to bring the custom scripting feature back. However, Microsoft doesn’t recommend you do this as custom scripts and solutions may cause unexpected security risk and load to your sites.

If you prefer to turn scripting on, please be acknowledged of this consequences:

• If you want to enable scripting on Personal Sites, select Allow users to run custom script on personal sites
• If you want to enable scripting on other user-created sites, such as Team Sites or Project Sites, select Allow users to run custom script on self-service created sites.
• Select OK. It takes about 24 hours for the change to take effect.

Here is table you may find very interesting for your just purchased and out of the box secured Sharepoint Online tenant:

Features affected when scripting is disabled

When you disable scripting on personal sites or self-service-creation sites, the theme gallery, certain web parts, and other features that support scripting are no longer available to site collection owners or site owners. Any sites that used these features before scripting was disabled are still able to use them.
The following site settings are no longer be available after scripting has been disabled:

Site feature	Behavior	Notes
Save Site as Template	No longer available in Site Settings.	You can still build sites from templates created before scripting was disabled.
Save document library as template	No longer available in Library Settings.	You can still build document libraries from templates created before scripting was disabled.
Solution Gallery	No longer available in Site Settings.	You can still use solutions created before scripting was disabled.
Theme Gallery	No longer available in Site Settings.	You can still use themes created before scripting was disabled.
Help Settings	No longer available in Site Settings.	You can still access help file collections available before scripting was disabled.
HTML Field Security	No longer available in Library Settings.	You can still use HTML field security that you set up before scripting was disabled.
Sandbox solutions	Solution Gallery will not appear in the Site Settings so you can’t add, manage, or upgrade sandbox solutions.	You can still run sandbox solutions that were deployed before scripting was disabled.
SharePoint Designer	Site Pages: No longer able to update web pages that are not HTML. Handling List: Create Form and Custom Actionwill no longer work. Subsites: New Subsite and Delete Site redirect to the Site Settings page in the browser. Data Sources: Properties button is no longer available.	You can still open data sources.
Uploading an ASPX file to a document library	No longer available in document libraries.	ASPX files that are in the library already are not impacted.

The following web parts and features are unavailable to site collection owners and site owners after scripting has been disabled.

Web part category	Web part
Blog	Blog Archives Blog Notifications Blog Tools
Business Data	Business Data Actions Business Data Item Business Data Item Builder Business Data List Business Data Related List Excel Web Access Indicator Details Status List Visio Web Access
Community	About This Community Join My Membership Tools What’s Happening
Content Rollup	Categories Project Summary Relevant Documents RSS Viewer Site Aggregator Sites in Category Term Property Timeline WSRP Viewer XML Viewer
Document Sets	Document Set Contents Document Set Properties
Forms	HTML Form Web Part
Media and Content	Content Editor Script Editor Silverlight Web Part
Search	Refinement Search Box Search Navigation Search Results
Search-Driven Content	Catalog-Item Reuse
Social Collaboration	Contact Details Note Board Organization Browser Site Feed Tag Cloud User Tasks
Master Page Gallery	Can’t create or edit master pages
Publishing Sites	Can’t create or edit master pages and page layouts