Adobe Acrobat 9 Standard installed on my windows won't open.

[johnw75701571]

I have Adobe Acrobat 9 Standard installed on my windows machine and it simply won't open.  Is this version just too old and is there a way to update it?  I have serial number.

[Test Screen Name]

To know whether it's too old we'd need to know what your computer is running - what version of Windows? Also fo you get an error message, if so exactly what does it say?

[johnw75701571]

I am running a Windows Pro 10 System with a 64 Bit processor.  This evening, I restarted the machine and the adobe began to work again and color all my pdf's red again, but I still want to know if I can upgrade somehow.

Thank you very much.

[Test Screen Name · Accepted solution]

Unfortunately it's too late for a reduced price upgrade. The permanent license Acrobat DC is limited and out of date, the subscription version is recommended.