These are the Support Forums for FSUIPC and related products.

These forums replace the old support forums which have been running for 20+ years. The old forums contain a wealth of information on all FSUIPC products, but are now no longer available.

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https://discord.gg/zjwUTrxmmE

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[Solved] Keys not working

Posts: 2

Peter Harding

Registered

Topic starter

May 26, 2026 9:21 am

(@peter-harding)

Joined: 2 days ago

Hi, I have rebuilt my PC and installing FSUIPC fails; the error says the keys/registration is not valid. I downloaded the latest version of FSUIPC7 but same thing. I have checked the orders (for WIDEFS as well) on SimMarket and the keys are correct, as is my name and email which I have been using for a long time.

Any help appreciated. Thanks

Peter

2 Replies

Posts: 301

FSUIPC

Admin

May 26, 2026 10:53 am

(@fsuipc)

Joined: 10 months ago

If you have re-installed windows. you will also need to download and install the latest combined VC++ redistributables from Microsoft. For further details, please see the Installation and Registration document, section Invalid Key Problems.

John

Peter Harding

Registered

(@peter-harding)

Joined: 2 days ago

Posts: 2

May 26, 2026 11:35 am

Reply to FSUIPC

Ahh, thanks John, should have RTFM'd shouldn't I. All good though after the VC++ installs. Thanks for the quick response.