Cannot open object explorer in SSMS

Problem:
When you try to open object explorer in SQL Server management studio object explorer does not come up.

Fix:
Reset the window layout.
To reset the lay out in SQL Server Management Studio, Select Window Menu and Select Reset Window Layout Option

  • Window > Reset Window Layout

    Reset Window Layout

This should fix the issue.

Additional Problem details:
All the options of opening object explorer will be unsuccessful and object explorer does not show up.
using menu view > object explorer
using F8 Shortcut key

Even if SSMS is reopened object explorer does not show up, also after restarting the system object explorer is not visible.