Mere registration of the will wont make it valid unless the same is not proved recent judgement

There has to be 2 witnesses in the execution of a Will besides the drafting counsel /attesting Notary /  registering Sub-Registrar, get the other witness(es) to depose and prove its validity.

If a witness to a will has died, you can prove the will by using secondary evidence, such as documents, testimony, or handwriting analysis

Use documents that the deceased witness signed, such as previous legal documents or correspondence.

Get testimony from people who were present when the will was signed.

Use witnesses who are familiar with the deceased witness's signature to identify.

Use a handwriting expert to compare the signature on the will to known samples of the deceased witness's handwriting.

What are the facts? What is the context?

The 2nd witness, the scribe and if it is registered the SR can provide the register where the will was registered by him.

In case attesting witnesses of will dies then will can be proved by scribe or any person who is familiar with testator's signaure can prove

Having seen the judgement, It was a casual question. Since most Wills are made by old people the witness will be whom the testator has acquaintence and of same age in most cases. They may be friends of the testator and his/her age and in some cases, who might have even died before the testator. So it was casually asked what happens if the witnesses passed away.

Thus it was a question based on academic interest and not a real issue.

In future you may post only real problems while seeking legal opinion here instead of testing the knowledge of the experts here.

It is ridiculous to give examination on this platform.