Author: Bob Lin

Situation: The Client reports a DNS problem. Sometimes, some computers can’t access some servers.

Troubleshooting: in DNS Manger, we find two of DCs have the same IP address. Correcting the DNS A record fixes the problem.

Situation: When the user tries to delete a folder, she gets this message: The action can’t be completed because the file is open in Windows Explorer. In the folder, all files have been deleted except thumbs.db.

Resolution: 1. Windows only uses the thumbs database if you’re browsing files in Windows Explorer with a view that requires Explorer to pull thumbnail data for display. You can avoid this error by changing the view to Details.

2. Disable Windows from creating and caching local thumbnails by Group Policy. Run gpedit.msc. User Configuration -> Administrative Templates -> Windows Components -> File Explorer. Enable “Turn off caching of thumbnails in hidden thumbs.db files”.

3. Disable Windows from creating and caching local thumbnails by the Registry Editor. Run regedit.exe. Navigate to HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\. Create new DisableThumbsDBOnNetworkFolders DWORD key. Modify it to change the value from 0 to 1.

Situation: The client just installed new Canon C5440i printer. One of users can’t print from Outlook. Whenever she tries, the Outlook crashes.

Troubleshooting: 1. Repairing Outlook doesn’t fix the problem.

2. Upgrading Office 365 doesn’t fix the problem.

3. We fix the problem by add new PCL6 driver.

Situation: The client has a Windows 2012 R2 as RD Sever. When they run QWINSTA.exe to access remote session, they receive “Access denied” message. If they run this command from the console or run as administrator, it works. They would like to know if it is possible to run this command as administrator automatically.

Resolution: yes, if they create a shortcut, they will have an option to run it as administrator. Please refer to this how to:

Run a program as administrator automatically

Situation: The client would like to run a program as administrator automatically.

Resolution: create the program shortcut, you should have an option to run it as administrator. Right click on the shortcut, go to Properties>Shortcut. Check Run as administrator.

Situation: The user receives this message when she opens Outlook:

‘Your mailbox has reached its maximum size limit at which you cannot send or receive any more content. Empty your deleted items folder from MS Outlook or delete messages from your mailbox to create more space.’’.

Resolution: We can reduce the size of Outlook Data Files by using Mailbox Cleanup tool and Conversation Clean Up tool. Please refer to this post for more details:

Situation: The client just migrated their website. Now, IE can access the website but chrome can’t and gets time out.

Troubleshooting: 1. Go to “C:\Program Files (x86)\Google\Chrome\Application”.
Here you will find a file ‘master_preferences’, delete that file or just move it out of that folder.  Close Chrome and reopen and it should start working.

2. it could be caused by an antivirus software, try to disable it or to update it.

3. MSIE → Tools Menu → Internet Options → Advanced → Reset … → Default Options (You do not need to delete personal info)

4. I had the same problem and it got resolved as follows.

1. Press Win key + R.
2. Type services.msc and enter.
3. Services Window will open.
4. Look for the service “Windows Event Log”.
5. Right click on it and choose restart.
6. If it brings the “Restart other Services” Dialog box, Press yes.
7. If this resolved your problem, Right click on the Service “Windows Event Log” again and choose properties and make sure you have “Startup type” set to Automatic.

5. May clean cache in Web server.

6. Reset switch cache.

Situation: The client setup FTP on their Windows 2012 R2 server. Internet Browser access the FTP server without any issues. However, FillZilla can’t establish the connection with this error: Could not connect to server.

Troubleshooting: 1. Make sure the user has correct password.

2. Make sure the user has permissions to access the FTP folder.

3. Try change encryption to “only use plain FTP” and logon type “Normal” under File>Site Manager.

4. try this settings:

• Open Filezilla, go to Edit -> Settings
• Click on Connection -> FTP: Choose Active
• Click on Connection -> FTP -> Active Mode: Select “Ask your operating system for the external IP address”
• Click on Connection -> FTP -> Passive Mode: Choose Fall Back to Active Mode
• Press OK.

5. Try to use the IP address instead of the DDNS.

6. Go to File > Site Manager > Select your site > Transfer Settings, change the Transfer mode from Default to Active or Passive.

7. Make sure you can telnet port 21.

8. Go to File > Site Manager, change the Encryption to Only use plaint FTP (insecure).

Situation: The client setup FTP on their Windows 2012 R2 server. Internet Browser access the FTP server without any issues. However, FillZilla can’t establish the connection with this error: Failed to retrieve directory listing.

Troubleshooting: 1. Make sure the user has correct password.

2. Make sure the user has permissions to access the FTP folder.

3. Try change encryption to “only use plain FTP” and logon type “Normal” under File>Site Manager.

4. try this settings:

• Open Filezilla, go to Edit -> Settings
• Click on Connection -> FTP: Choose Active
• Click on Connection -> FTP -> Active Mode: Select “Ask your operating system for the external IP address”
• Click on Connection -> FTP -> Passive Mode: Choose Fall Back to Active Mode
• Press OK.

5. Try to use the IP address instead of the DDNS.

6. o to File > Site Manager > Select your site > Transfer Settings, change the Trasfer mode from Default to Active or Passive.

Situation: The client has VM running Windows 2012 R2 on windows 2012 R2 Hyper-V. They can’t login the VM with “Apply Computer settings” screen forever.

Troubleshooting: 1. Turn off and turn on VM doesn’t fix the problem.

2. Running Safe mode has the same problem.

3. We find the host has a Windows update. Installing and restarting the host fixes the problem.

4. The problem we had is the server Windows update is default settings Install updates automatically. Whenever major windows updates installed, the RD server has a problem and the restating takes along time with “Apply Computer settings”. The resolution is change the Windows update default settings to Check for updates but let me choose whether to download and install them.