Wednesday, July 01, 2015

Folders without names reappear on desktop

Recently two folders without names appeared on my desktop. I can delete them, but they will reappear after a while. Furthermore, when I try to delete them, a window pops up and asks

"Are you sure you want to delete these icons from your desktop? 
To restore it later, go to Control Panel."

 If I open Windows Explorer, go to Desktop, and click on the folder icon without a name, on the bottom left, Windows Explorer displays something like:

This issue may be caused by Office 2013 installation and installation. The following shows the steps to delete these folders completely with the aid of the long names.

  1. Click the Windows Start button, and type in regedit in the search box, then press Enter.
  2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace and expand the NameSpace branch.
  3. Delete the branches of the same names with the ones found in Windows Explorer.
Now the folders should not reappear by themselves.

Tuesday, December 16, 2014

Removed user draining battery in Android 5.0 Lollipop

After you try the guest user mode in Android 5.0 Lollipop and delete it to return your own user profile, you may notice that in the battery usage, there is one item on the top, "Removed user", and the battery usage percentage is increasing.

To solve this problem, the following step may help.
  1. First make sure the use details of the removed user actually do NOT change over time (click on the "Removed user" in the battery status page to see use details). Note that, the battery usage percentage may still be increasing. If the use details change, try to enter into guest mode again, and delete.
  2. When your phone or tablet asks you to recharge, turn off your device, and recharge it.
  3. When the battery is full, turn on your device and the removed user should be gone.

Wednesday, November 19, 2014

Default reminder not working in Thunderbird Lightning calendar

You may encounter the problem that the default reminder does not work any more if you access the Google calendar through Provider for Google Calendar in Thunderbird Lightning. Whenever you create a event and use the Default Reminder, it does not work. If you edit that event, you will find the reminder option is set to No reminder. However, in Options --> Calendar --> Alarms, Reminders are set to on for events.  Thus it should add a reminder by default. In about:config, you may find similar entries like
and the value is set to [].

Why the Alarms setting does not work on the Google calendar? This problem occurs because you have NOT set a reminder in Google calendar settings through web interface, and it is inherited to your local computer. To solve the problem, follow the steps below.
  1. Log in to Google Calendar web interface (;
  2. Go to Settings -->Calendars and find out the calendars you would like to add a default reminder.
  3. On the right side of the calendar name, click on Edit notifications.
  4. In the Event notifications, add a pop-up notification.
  5. Quit Thunderbird and restart it.