need ac1st15.dll it's gone missing please help?

while installing a program I got a message "ac1st15.dll is missing on your computer.
How and where do I return it.

Anwsers to the Problem need ac1st15.dll it's gone missing please help?

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Hi Robert,
 
1.
Which program are you trying to install?
2.
How are you trying to install the program? Are you using a CD or downloaded the setup file?
 
You may try to re-download the setup file for the program or use a different copy to install the program and check if it helps.

• Download the Microsoft Windows ISO (installation device) from the following website:
  
• http://www.microsoft.com/en-us/software-download/windows10
• Users must select the appropriate ISO, either 32 bit or 64 bit, depending upon their individual computer.
• Extract the ISO file to a separate USB device or burn the program to a compact disc.
• Run the Microsoft Windows 10 upgrade directly from the software that you have thus created.

Recommended Method to Fix the Problem: need ac1st15.dll it's gone missing please help?:

 

 

How to Fix need ac1st15.dll it's gone missing please help? with SmartPCFixer?

1. Click the button to download SmartPCFixer . Install it on your system.  Open it, and it will perform a scan for your computer. The errors will be shown in the list.

2. After the scan is done, you can see the errors and problems need to be repaired. Click Fix All.

3. The Repair part is finished, the speed of your computer will be much higher than before and the errors have been fixed. You can also use other functions in SmartPCFixer. Like dll downloading, windows updating and print spooler error repair.

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