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_Bonez's avatar
_Bonez
Copper Contributor
Jun 18, 2026

SharePoint Online - Issues Saving Site as Template and Activating .wsp Solutions

Hello everyone, Recently I have been experiencing issues when saving a SharePoint site as a template and activating .wsp files within the Solution Gallery. This appears to be a recent change, as the...
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laceyk's avatar
laceyk
Brass Contributor
Jun 19, 2026

Hi, just adding on to this post. Yesterday this started happening and now nobody can create a site from the site templates I set up 3 years ago.

Has anyone else come across this? 

jm06400's avatar
jm06400
Copper Contributor
Jun 23, 2026

I came across similar issue. I noticed Microsoft upgraded the Site Collection/Site to latest version. The upgrade left the template behind. The versions of BizAppSiteTemplates and AccSrvSolutionGallery are out of synch and this is what caused the message above. 

The solution is to recreate the Template. Go the Site you used to create the template originally. In the url, add suffix to site url: /_layouts/15/savetmpl.aspx. The template page opens and you can then proceed with recreating the template. 

Try to create a site again pointing at your newly created template. You can also https://www.youtube.com/watch?v=93pVkdk1FzA