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I deleted a bunch of certificates. Now I can't get into web sites. I tried reinstalling firefox. No joy. John

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I mistakenly deleted a bunch of certificates. I can't get into web sites. How can I replace the certificates?

I mistakenly deleted a bunch of certificates. I can't get into web sites. How can I replace the certificates?

Chosen solution

Hi steeldrv, you can remove Firefox's certificate store file (cert9.db) and let it generate a new one. However, if you mention what is happening now -- do you get an insecure connection error page? -- there might be a different workaround.

For the steps to replace the cert9.db file, see the "corrupted certificate store" section of the following article: What do the security warning codes mean?

That article also lists possible fixes for other issues. To find the particular error code, you might need to click an "Advanced" button on the error page.

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jscher2000
  • Top 10 Contributor
8837 solutions 72222 answers

Chosen Solution

Hi steeldrv, you can remove Firefox's certificate store file (cert9.db) and let it generate a new one. However, if you mention what is happening now -- do you get an insecure connection error page? -- there might be a different workaround.

For the steps to replace the cert9.db file, see the "corrupted certificate store" section of the following article: What do the security warning codes mean?

That article also lists possible fixes for other issues. To find the particular error code, you might need to click an "Advanced" button on the error page.

Hi steeldrv, you can remove Firefox's certificate store file (cert9.db) and let it generate a new one. However, if you mention what is happening now -- do you get an insecure connection error page? -- there might be a different workaround. For the steps to replace the cert9.db file, see the "corrupted certificate store" section of the following article: [[What do the security warning codes mean?]] That article also lists possible fixes for other issues. To find the particular error code, you might need to click an "Advanced" button on the error page.
cor-el
  • Top 10 Contributor
  • Moderator
17681 solutions 159964 answers

Did you try to close and restart Firefox? If you deleted builtin root certificates then this might help.

Did you try to close and restart Firefox? If you deleted builtin root certificates then this might help.