Introduction
Web part maintenance page is a OOB page which is used to maintain a list of web part on SharePoint page. A SharePoint web part which is causing an issue an issue for page can be removed using this page. Basically this page provides a list of web parts added in perticular page and you have an option to Close/remove these web parts from SharePoint Page.
Solution
- Through UI :
- Go to the pages library and select the page for which we are getting an error.
- Right click , Edit Properties and go to the bottom of the page there you will find an link as shown in below image.
- Using Query String parameter:
Simply add ?Contents=1 at the end of the page URL; It will navigate you to Web part maintenance page. So if your page URL is http://XYZ.SharePoint.com/sites/SiteCollection/Pages/TestPage.aspx then after appending query string it should be like http://XYZ.SharePoint.com/sites/SiteCollection/Pages/TestPage.aspx?contents=1
However this is not recommended to remove the web part from page like this; as it may affect the normal page functionality.
Happy SharePointing !!!!