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How to fix error E\ProPlus.www\OSETUP.DLL digital signature does not validate or is not present. how can i fix this for free?

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Hi,
http://www.fix-all-dll-errors.com/osetup.dll/

You can find it here...just follow the link.
I also registered few dll's from this site as it is free...worked in my case.:)

Posted on Feb 18, 2011

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How to fix - Setup cannot find ProPlus.WW\ProPsWW2.cab


When you receive the error "Setup cannot find ProPlus.WW\ProPsWW2.cab" it might mean the MD5 checksum the install was expecting and the one on the actual file do not match. Here's how I fixed the issue.
First let me explain in simple terms what the MD5 is. MD5 is an algorithm that is used to verify data integrity. If anything in the file changes the MD5 will also change so it's a way for the program to check the integrity of the file.

The MD5 file is kept in the setup file of the proplus.ww folder. Open it with notepad and find the section that looks similar to the following **the numbers after "MD5 =" is what you need to be concerned with. Also remember that your numbers may differ. **


<LocalCache DownloadCode="{90140000-0011-0000-0000-0000000FF1CE}" SkuComponentDirectory="ProPlus.WW">
<File Id="Office64WW.xml" MD5="899A7D743D01852EBD036B465D1EF181" Size="4685" RelativeCachePath="Office64WW.xml" RelativeSourcePath="Office64WW.xml"/>
<File Id="Office64WW.msi" MD5="43B44C38BE513D9589ECAC7129DDC7C3" Size="3025408" RelativeCachePath="Office64WW.msi" RelativeSourcePath="Office64WW.msi"/>
<File Id="OWOW64WW.cab" MD5="E1E97F01F4292B89953204557A043C7D" Size="23865400" RelativeCachePath="OWOW64WW.cab" RelativeSourcePath="OWOW64WW.cab"/>
<File Id="ProPlusWW.xml" MD5="146CA2B8E1559F81E8DF6A3AED949E2A" Size="17252" RelativeCachePath="ProPlusWW.xml" RelativeSourcePath="ProPlusWW.xml"/>
<File Id="ProPlusWW.msi" MD5="F7DCCD578605F72AEEED775C9EB40AB8" Size="24809472" RelativeCachePath="ProPlusWW.msi" RelativeSourcePath="ProPlusWW.msi"/>
<File Id="ProPsWW.cab" MD5="3EA469E81A6064AE4BEFE4A9ACF36A9D" Size="149278843" RelativeCachePath="ProPsWW.cab" RelativeSourcePath="ProPsWW.cab"/>
<File Id="ProPsWW2.cab" MD5="86BEB0B6A2E76E95E580615185C06B04" Size="197934115" RelativeCachePath="ProPsWW2.cab" RelativeSourcePath="ProPsWW2.cab"/>
<File Id="setup.exe" MD5="4D92F518527353C0DB88A70FDDCFD390" Size="1100664" RelativeCachePath="setup.exe" RelativeSourcePath="..\setup.exe"/>
<File Id="osetup.dll" MD5="FCC38158C5D62A39E1BA79A29D532240" Size="5789544" RelativeCachePath="osetup.dll" RelativeSourcePath="osetup.dll"/>
<File Id="ose.exe" MD5="9D10F99A6712E28F8ACD5641E3A7EA6B" Size="149352" RelativeCachePath="ose.exe" RelativeSourcePath="ose.exe"/>
<File Id="pkeyconfig-office.xrm-ms" MD5="3DCFF1DCDEB1B837EC8F13351C8A92AC" Size="715834" RelativeCachePath="pkeyconfig-office.xrm-ms" RelativeSourcePath="pkeyconfig-office.xrm-ms"/>
<File Id="PidGenX.dll" MD5="7F120AAD20ECAE1EA421083F26611519" Size="1248016" RelativeCachePath="PidGenX.dll" RelativeSourcePath="PidGenX.dll"/>
<File Id="Setup.xml" MD5="" Size="" RelativeCachePath="Setup.xml" RelativeSourcePath="Setup.xml"/>
</LocalCache>
Next you will need to download and install an MD5 checker. I'll leave the process of how to use the MD5 to you to learn but it's pretty simple.

Next run the MD5 checker on the file/s that produce the errors during install. *there may be more than one*

Now there are 2 ways to work around this - If the MD5 on the checker did not match the MD5 in the file it probably means the file is corrupted so your best bet is to download the software again or get another disk.

Another less recommended way is to copy/paste the MD5 from the checker into the file (remember to make a backup of your setup file before) then save it and run the install again. This fools the installation process into verifying that your installation files are all OK.

Good luck!!

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