Three Simple Steps to Fix Error 1721

Posted on May 11, 2012 by April

Error 1721 usually occurs when computer users are trying to uninstall a programme using Add or Remove Programmes function in windows Control Panel. The error is displayed as below:

“Error 1721. There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support personal or package vendor.”

Cause of the error:

Accoring to the error message, the windows installer package, which is responsible for completing the installation, is having a problem. It may either be a simple setting problem, or a serious registry issue. To fix the issue, it is necessary to make the windows installer function again.

Follow below three simple steps to fix windows installer, try to reinstall the programme after each step:

Step one: Turn on the window installer service

1.     Open Control Panel |administrative tools | service.
2.       In the Services (Local) list, right-click Windows Installer, and then click Properties.
3.       If the Startup type drop-down list is set to a value of Disable, select the Manual option from the Startup type drop-down list, and then click OK.
4.       Click the File menu, and then click Exit.

Step Two: unregister and re-register windows installer package

1.       Click the Start, Run, type CMD and press Enter
2.       In the Command Prompt window, type MSIEXEC /UNREGISTER, and then click Enter. Even if you do this correctly, it may look like nothing occurs, or you may briefly see an hourglass. After you run this command, the operation is completed.
3.       Type MSIEXEC /REGSERVER, and then click Enter. Even if you do this correctly, it may look like nothing occurs, or you may briefly see an hourglass. After you run this command, the operation is completed.

Step Three: Scan and fix registry errors

Registry errors can cause windows installer to malfunction or even corrupted. When the windows installer package is installed, the system creates registry entrys to decide how it works. If these registry entrys are corrupted, windows installer will not be able to function correctly. To fix error 1721, you will need to install a registry optimizer. It will fix the error and get the windows installer function again.

Solution to “MessagingApp.exe has stopped working” Error

Posted on May 10, 2012 by April

MessagingApp.exe is an important file within instant communication tools, such as windows messanger and Yahoo messanger. If this file has stopped working, you will not be able to run the programmes.

Cause of the error:

The most possible cause of this error is virus attack which has corrupted system files and causes the messagingApp.exe to stop running. You will find the error suddenly occurs in the system, which gives no sign before.

To fix this error, there are several ways:

First, scan system with an antivirus software

As this error is very possibly caused by virus attacks, it is necessary to remove the virus from the system. Most computer users shall already have an antivirus to protect the system, but in case if you don’t have one, you can download and install Microsoft security essential to scan and remove the virus.

Second, run a system files check to fix the corrupted files.

Open start button
Click run button or click the search box
type cmd and press enter
type SFC /SCANNOW in the command window
Press ENTER.

Third, check if the computer date and time is correct

Virus can change computer date and time setting, causing malfunction of some programmes which rely on correct date and time to communicate with internet. If the computer date is set back to several years ago, the programme will not be able to recognize data and may also be recoginized as danger by internet server. Thus it is necessary to put the computer date and time correctly.

Fourth, scan and fix registry errors

The most terrible case is that the virus has corrupted the registry and disabled some programmes from running. System optimizer can detect and clean these registry issues for you. Any delay will lead to unimaginable more serious issues. Remember, 90% of the computer problems are caused by registry issues. So it is always recommended that you install a system optimizer to consistantly protect your system.

Fixing Windows Update Error 80071AA7

Posted on May 10, 2012 by April

When you are trying to update the system with windows update center, you may suddenly get this error:

Error details: Code 80071AA7

In most cases, this error is temporarily caused by very slight interruptions in communications between the computer to be updated and the update to be downloaded.

Below are several possible causes of error 80071AA7:

Internet is not connected

Antivirus or firewall block windows update center

Windows update components are not well registered

System files are corrupted

To resolve the issue:

First, verify that the internet is connected stably.

Try to access some websites with your browser and see if you can view any websites. If not, your internet connection may be interruppted. Check and ensure that the cable or wireless adapter is correctly set and connected before you move on to next step. If you can’t get the internet connected, contact your internet service provider for help.

Second, disable Antivirus software and try the update again.

Protective software, such as antivirus or firewall, may sometimes block windows update. It worths a try to turn off these third party software first and then try windows update again. You may find the issue resolved by such a simple solution. If the situation is not improved, continue to step 3.

Third, re-register windows update components.

Start button,
click run button or click search box
copy and paste below commands one by one:
regsvr32 wuapi.dll
regsvr32 wups.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wuweb.dll
regsvr32 MSXML3.dll
regsvr32 qmgr.dll
regsvr32 qmgrprxy.dll
regsvr32 jscript.dll

Fourth, run a system files check to fix corrupted system files.

open start button
run box,
type sfc /scannow and press enter.
The command will start a scan to check your system files. If an install CD is required, simply put it in the CD rom and let it repair your system.

To fix system files, you can also refer to the help from a windows update fixing tool. It can detect system errors and registry issues in your computer and fix them in a minute. It also has specific function to fix windows update errors by updating windows update components and creating an independent chanel for windows update to avoid conflicts with other programmes.

Solution to “windows live mail not displaying contacts list”

Posted on May 8, 2012 by April

In windows live mail, when you click “contacts”, it is supposed to show a list of the contacts. But you may just get a blank pane on the left hand side of the screen. This problem simply occurs when you open windows live mail one day. It may never happened before. The cause is still not clear yet.

To solve this issue, there are several suggestions:

First: Sign out of windows live mail and sign in again.

This works for some users in solving no contacts list problem. It is assumed that the issue is caused by a temperary display problem. By signing out of the account and signing in again, the mail system will reload all the data including the contacts list. The issue is then resolved.

Second: Decline the invitation in webmail

If the issue persists even in your webmail, it may be possible that a Pending Group Invitation is causing this issue. To resolve it, you have to decline to the invitation. The instructions are stated below:

1. Click Contacts.
2. Click View
3. Click on Groups
4. Click No, thanks.

Third: Check your auto-complete suggestions settings.

1. Go to Options, then More Options.
2. Under Customizing Hotmail, click Advanced privacy settings.
3. Under Auto-complete suggestions select Only suggest people in my contact list.
4. Click Save

Fourth: Optimize your system.

.Virus and malware can corrupt the registry and cause numerous problems in your computer, including the windows live mail error. System optimizer can detect and clean these registry issues for you. Any delay will lead to unimaginable more serious issues. Remember, 90% of the computer problems are caused by registry issues. So it is always recommended that you install a system optimizer to consistantly protect your system.

How to Fix Network Connection Issue

Posted on May 8, 2012 by April

Network connection issue usually happens out of expectation, and can cause greatest trouble to user since it rules out any possibility of getting online for help. When the network is having problem, the system may display below error messages:

Unidentified Network No Internet Access

No connections are available

The dependency service or group failed to start.

Cause

Network connection problem is caused by multiple reasons. Most of the cases, it is related with registry errors that caused by virus or malware. When the antivirus software remove these viruses, they sometimes remove the vital files that infected by virus.

Network issue is also possibly caused by protective software that disable the connection due to some safe considerations.

Solution:

1. Turn off protective software

Network issue is possibly caused by protective software that disable the connection due to some safe considerations. Especially when the connection issue is related to outlook or your mail system, it is worthwhile to turn off anti-virus and anti-malware software to have a try.

2. Reset IE

This solution is only to solve network connection error on IE. If you find that other programmes is connecting online well, but IE is not connecting at all, then the reason may be your IE setting. Try to reset IE to solve the issue:

Click the Internet Explorer Tools menu, or press Alt-T on your keyboard.
Select Internet Options.
On the Advanced tab, click Reset.
Select the “Delete personal settings” checkbox.
Click Reset.

3. reset TCP/IP

click Start and then click Run. Copy and paste (or type) the following command in the Open box and then press ENTER:
cmd
At the command prompt, copy and paste (or type) the following command and then press ENTER:
netsh int ip reset c:\resetlog.txt

Note If you do not want to specify a directory path for the log file, use the following command:

netsh int ip reset resetlog.txt
Reboot the computer.

4. Clean registry errors

Most of the cases, Network issue is related with registry errors that caused by virus or malware. When the antivirus software remove these viruses, they sometimes remove vital system files that infected by virus, causing serious registry errors. To get the network connected again, we will need to fix these registry errors first.

Solution to Windows Update Error 0x80072EE2

Posted on May 4, 2012 by April

When you use windows update center to download and install updates, you may suddenly get this error:

Error 0x80072EE2: The specified module could not be found

In most cases, this error is caused by temporary issues caused by very slight interruptions in communications between the computer to be updated and the update to be downloaded.

There are several possible causes of error 0x80072ee2:

Internet connection fails
Antivirus or firewall block
Windows update components are not registered
System files corrupted

To solve the issue:

First, make sure the internet is connected stably.

Try to access some websites on browser and see if you can sucessfully get into them. If not, your internet connection may have failed. Check and ensure that the cable or wireless adapter is correctly set and connected before you move on to next step. If you can’t get the internet connected, contact your internet service provider for help.

Second, disable protective software temporarily to test the issue.

Protective software, such as antivirus or firewall, are known to block windows update sometimes. It worths a try to turn off these third party software to see whether windows update works again. If the situation is not improved, continue to step 3.

Third, re-register some windows update components.

Start button,
clicn run button or click search box
copy and paste below commands one by one:
regsvr32 wuapi.dll
regsvr32 wups.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wuweb.dll
regsvr32 MSXML3.dll
regsvr32 qmgr.dll
regsvr32 qmgrprxy.dll
regsvr32 jscript.dll

Fourth, run a system file check to fix corrupted system files.

To do this, open start button, in run box, type sfc /scannow and press enter. The command will start a scan to check your system files. If an install CD is required, simply put it in the CD rom and let it repair your system.

To fix system files, you can also refer to the help from a windows update fixing tool. It can detect system errors and registry issues in your computer and fix them in a minute. It also has specific function to fix windows update errors by updating windows update components and building up a special chanel for windows update to avoid conflicts.

How to Fix Sound Issue

Posted on May 4, 2012 by April

Sound problem is quite common in windows system. It can occur when you are using Media player, internet explorer or other softwares that has the function of sound. Sometimes, the sound issue just occurs on specific software. However, it can mute all software at the same time as well.

When a sound issue occurs, we will need to check if all software with sound are not working, or just certain programme is muted. If some of the programmes still have sound, then it may be the setting of that problematic programme. In such case, open the setting of that programme, search and find sound option, see if you have turned off the audio function. If so, just enable it back. It shall do the trick.

For example, if the internet explorer is silent and not producing sound, you will need to check if the sound is disabled in internet option.

Open IE. Go to Tools> Internet Options.
Switch to the “Advanced” Tab.
Scroll down to the “Multimedia” sub-heading.
Make sure the box next to “Play sounds in web pages“ is checked.
Click “ok“. Restart Internet Explorer.
Test to see if sounds will now play.

If there is no sound anywhere on the computer, it may be more serious problems inside the system, for example, system files is corrupted or the sound driver is missing. Under this situation, you will need to :

First, do a system file check to make sure the system files are not corrupted.

Start button
Run button or search box
Type cmd and press enter
Type sfc /scannow
Press enter

Second, check device manager to see if sound driver is installed.

In many cases, sound problem is caused by missing sound driver. It may be mistakenly deleted from the system or damaged by virus. The solution is simple: Install the sound driver back. To get the sound driver back, you can either go to the sound card manufacturer’s website, search the correct model number and download; or install a driver updating tool to do this for you.

Third, Enable windows audio service.

1) Click on Start and Run
2) Type services.msc and press enter
3) Scroll down to Windows Audio in the right-hand column and double-click on it,
4) Make sure the Startup Type is set to Automatic and click on the Start button under Service Status.

Fourth, Fix registry errors in the system

Virus and malware can corrupt the registry and cause numerous problems in your computer, including the sound error. You need a good tool to detect and clean these registry issues for you. Any delay will lead to unimaginable more serious issues. Don’t hesitate to fix your sound errors with a fixing tool.

How to Solve Ac1st16.dll Error

Posted on May 3, 2012 by April

Ac1st16.dll is usually associated with the programme AutoCAD. It is a file that controls the 3D graphical features of the program developed by AutoDesk, Inc. Without it, the software will not run properly or function well.

Important as it is, this dll file can cause series of errors as shown below:

“Cannot find ac1st16.dll.”
“A required .dll file – ac1st16.dll was not found.”
"Cannot start Autodesk ObjectDBX. A required component is missing: ac1st16."
"This application failed to start because ac1st16 was not found."

These errors are usually caused by virus removal tool that cleans the virus but at the same time, removes the infected but important file from the system. To solve the issue, it is necessary to get the dll file back.

The easiest solution is to resintall AutoCAD. But the first thing you must do is to ensure that the folder in which this dll file is located is listed correctly in the PATH statement. This dll file is located in C:\Programs Files\Common Files\Autodesk Shared.

Make sure that the PATH statement for this file shows the exact path as listed above. If you need help on how to check the PATH statement, refer to the steps presented below:

Click Start, right-click My Computer, and then click Properties.
Click the Advancedtab.
Click the Environment Variables button in the lower right-hand corner of System Propertiesdialog box.
Check for the path of ac1st16.dll in the Value column.

If the path listed is incorrect, use the Edit button to correct it.

Uninstall and Reinstall AutoCAD

Use the built-in Add or Remove Programs utility to uninstall AutoCAD. Next, restart your computer and reinstall the software.

Update AutoCAD with the latest version if the issue persists after reinstallation.

It is recommended that you install a registry cleaner to improve and protect your system. It can detect and clean these dll errors for you. Computer is vulnerable to many virus and malware attacks, and once attacked, numerous errors will come up and

How to Solve Olmapi32.dll Error

Posted on May 3, 2012 by April

Olmapi.dll is a file that belongs to outlook programme. It is vital for outlook to run smoothly and can cause below error if it is corrupted or missing:

“The file OLMAPI32.DLL is incompatible with Microsoft Outlook. Install Outlook again".

To fix this issue, we can either try to repair office/outlook or replace the dll file with a compatible one, or try to edit the corrupted registry.

How to repair Outlook:

Click Start.
Click Control Panel.
Double click Add or Remove Programs.
Select Office 2007 in the currently installed programs list, and then click the Change button.
Select Add/Remove Features.
Click Continue.
Click on the first option and select Run All on My Computer.
Follow the on screen instructions to complete the installation process.

How to replace the dll file:

Close all open applications.
Restart Windows in Safe Mode.
Use the built-in search utility to look for msmapi32.dll.
Right-click msmapi32.dll, click rename, type msmapi32.old, and then press Enter to rename the file.
Install Outlook.

How to edit the registry

Exit Outlook 2007.
Click Start>Run.
Type regedit in the Open box and then press Enter.
In the registry editor window, click Edit>Find.
Type olmapi32.dll in the ‘Find What’ box, and then click Find Next.
Locate and click HKEY_CLASSES_ROOT\Installer\Components\613 B99D5CFD 7FCB4793B500086BB4113 (Note: the last string of numbers may vary). If you don’t see the entry the first time, continue to press F3 until you locate an entry same/similar to the one shown above.
Locate and select olmapi32.dll in the right-pane of the registry editor window, and then click Delete.
Close Registry Editor.
Open Outlook 2007.

Additional advice: Virus and malware can corrupt the registry and cause numerous problems in your computer, including the dll error. System optimizer can detect and clean these registry issues for you. Any delay will lead to unimaginable more serious issues. Remember, 90% of the computer problems are caused by registry issues. So it is always recommended that you install a registry cleaner to consistantly protect your system.

How to Solve Outlook Pop3 Error?

Posted on April 29, 2012 by April

Outlook offers convenience of using email for people, but it also causes as much trouble as virus. As it is used to send and receive mails by internet connection, and it has account encryption settings, it sometimes stops working due to many kinds of errors. One of these errors is the pop3 error which is related to account settings and registry.

To resolve this behavior, make sure that you are using the correct account settings for your assigned e-mail servers. You can obtain the server information from your ISP or local area network (LAN) administrator. To confirm the settings for your Internet E-mail account:

Start Outlook.
On the Tools menu, click Accounts.
On the Mail tab, click the name of your e-mail account, and then click Properties.
On the General tab, verify that your e-mail address is correct.
On the Servers tab, check if the e-mail server information is correct for both the incoming mail (POP3) and outgoing mail (SMTP) servers. Verify that both servers have the correct settings for your password and account name. (You can check your email server information of Pop3 address on internet) Ask your ISP if your server requires you to log on by using a secure password authentication and if your outgoing mail server requires authentication.
On the Connection tab, confirm that the connection that you use is correct. For example, you may connect through a LAN or through a dial-up connection. Without a valid connection, your e-mail program cannot communicate with the e-mail servers.
On the Advanced tab, verify that your server ports are correct. POP3 servers use port 110 and SMTP servers use port 25. Make sure that these ports are correct. For more information, contact your ISP.
Click OK, and then click Close to save any changes.

Another way to fix this error is to use a registry cleaner to clean registry errors related to outlook. This will help you to get rid of any registry damages that block outlook’s connection with internet, and get your mail through successfully. You can find such software through searching on internet. It will not only fix your outlook errors, but also improve speed and performance of your system.