I cannot open my photoshop, its asking for a serial number. I do have one but it will not accept it. I've had this program for 5 years and this has never happened before.

I cannot open my photoshop. Its asking me for a serial number, which I already have. However, it will not accept my serial number. I've had this program for 5 years and this has never happened.

If your Creative Suite version is #3 through 6, you might try running the CS Cleaner Tools in preparation for a re-install.
Use the CC Cleaner Tool to solve installation problems | CC, CS3-CS6
If you have a legacy version, it may be that the activation servers for your product are no longer available.
Nancy O.

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