Hot answers tagged web-part
You can't easily. You can try: Page Viewer Web Part, and just consume the library from Subsite A. When setting up the URL to the page, include IsDlg=1 at the end, that'll hide the ribbon and stuff: http://davidlozzi.com/2014/03/25/we-all-know-what-sharepoint-isdlg-does-wait-what-the/ Custom web part which pulls and reads the library, but you would have to ...
If you a wsp like you mentioned webpart.wsp, then you can deploy it on your production server using SharePoint Management shell. Use powershell if just have to upgrade the solution Update-SPSolution –Identity "<wsp package name>" -LiteralPath "<physical path of the wsp package>" –GacDeployment e.g.: Update-SPSolution –Identity "test.wsp" ...
Rick, Can you add yourself to the AD group that you gave access to, change the permission settings on the WP, then remove yourself from the AD group?
I'm not sure how you can edit it, but you can always append ?contents=1 to the page URL to go to the web part maintenance page. From here, you can delete the web part. Afterwards, you can just add the web part again. This probably isn't what you're looking for, but I thought it might help.
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