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How can I cure a Windows error code 643 with purchasing a program

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Windows? Office? Adobe?
Is there more to the error message?

The most common occurrence of error 643 that I can find is an installation error for a DOT NET Framework update failure.

Maybe look at this:

If that doesn't help, tell us your OS info: Name, version, 32 or 64 bit, etc. What program are you trying to print/save from, or does it matter? (Acrobat, Office, etc.)