Meanwhile, the admin can modify the username and password to check the result. If the issue persists, to provide further assistance, we'd like to know if the issue appears as other member when they use their account to sign Skype for business app.
Bug check description: This indicates that the store component caught an unexpected exception. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
Important: at the end of each method, check if the problem has been solved. If it persists, proceed to the next one. SFC, DISM and CHKDSK. Use a Windows disk, file and image correction tool 1. On the desktop, press the Windows + X keys, and select Windows Powershell (Admin); 2. Copy and paste the following commands, one line at a time, followed ...
Perform SFC scan and check the issue status. How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
Unplug any external device connected to the computer except for keyboard and mouse and check if issue persists. If still this issue persists i would suggest you to run startup repair and check if it helps.